Home / 130,890,373.20-180,629,972.19-72,155,139.66

Finding the Fourth Proportional to 130,890,373.20, 180,629,972.19 and 72,155,139.66

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Solution

The fourth proportional to 130,890,373.20, 180,629,972.19 and 72,155,139.66 is: 99,574,785.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,890,373.20 : 180,629,972.19 = 72,155,139.66 : x
  2. Step 2: Convert to fraction form
    130,890,373.20/180,629,972.19 = 72,155,139.66/x
  3. Step 3: Cross multiply
    130,890,373.20x = 180,629,972.19 × 72,155,139.66
  4. Step 4: Simplify right side
    130,890,373.20x = 13,033,380,870,151,366
  5. Step 5: Solve for x
    x = 13,033,380,870,151,366/130,890,373.20
  6. Step 6: Final answer
    x = 99,574,785.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.