Home / 79,403,857,999.20-119,105,786,998.80-78,852,859,970.40

Finding the Fourth Proportional to 79,403,857,999.20, 119,105,786,998.80 and 78,852,859,970.40

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Solution

The fourth proportional to 79,403,857,999.20, 119,105,786,998.80 and 78,852,859,970.40 is: 118,279,289,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,403,857,999.20 : 119,105,786,998.80 = 78,852,859,970.40 : x
  2. Step 2: Convert to fraction form
    79,403,857,999.20/119,105,786,998.80 = 78,852,859,970.40/x
  3. Step 3: Cross multiply
    79,403,857,999.20x = 119,105,786,998.80 × 78,852,859,970.40
  4. Step 4: Simplify right side
    79,403,857,999.20x = 9,391,831,943,880,664,678,400
  5. Step 5: Solve for x
    x = 9,391,831,943,880,664,678,400/79,403,857,999.20
  6. Step 6: Final answer
    x = 118,279,289,955.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.