Home / 126,684,103.20-190,026,154.80-78,004,107.60

Finding the Fourth Proportional to 126,684,103.20, 190,026,154.80 and 78,004,107.60

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Solution

The fourth proportional to 126,684,103.20, 190,026,154.80 and 78,004,107.60 is: 117,006,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,684,103.20 : 190,026,154.80 = 78,004,107.60 : x
  2. Step 2: Convert to fraction form
    126,684,103.20/190,026,154.80 = 78,004,107.60/x
  3. Step 3: Cross multiply
    126,684,103.20x = 190,026,154.80 × 78,004,107.60
  4. Step 4: Simplify right side
    126,684,103.20x = 14,822,820,625,833,456
  5. Step 5: Solve for x
    x = 14,822,820,625,833,456/126,684,103.20
  6. Step 6: Final answer
    x = 117,006,161.40

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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.