Home / 105,333.20-157,999.80-68,008.40

Finding the Fourth Proportional to 105,333.20, 157,999.80 and 68,008.40

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Solution

The fourth proportional to 105,333.20, 157,999.80 and 68,008.40 is: 102,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,333.20 : 157,999.80 = 68,008.40 : x
  2. Step 2: Convert to fraction form
    105,333.20/157,999.80 = 68,008.40/x
  3. Step 3: Cross multiply
    105,333.20x = 157,999.80 × 68,008.40
  4. Step 4: Simplify right side
    105,333.20x = 10,745,313,598.32
  5. Step 5: Solve for x
    x = 10,745,313,598.32/105,333.20
  6. Step 6: Final answer
    x = 102,012.60

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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.