Home / 129,138,244.11-178,209,074.94-72,622,973.27

Finding the Fourth Proportional to 129,138,244.11, 178,209,074.94 and 72,622,973.27

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Solution

The fourth proportional to 129,138,244.11, 178,209,074.94 and 72,622,973.27 is: 100,218,746.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,138,244.11 : 178,209,074.94 = 72,622,973.27 : x
  2. Step 2: Convert to fraction form
    129,138,244.11/178,209,074.94 = 72,622,973.27/x
  3. Step 3: Cross multiply
    129,138,244.11x = 178,209,074.94 × 72,622,973.27
  4. Step 4: Simplify right side
    129,138,244.11x = 12,942,072,884,948,002
  5. Step 5: Solve for x
    x = 12,942,072,884,948,002/129,138,244.11
  6. Step 6: Final answer
    x = 100,218,746.00

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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.