Home / 129,589,273-178,836,929.22-71,646,253.48

Finding the Fourth Proportional to 129,589,273, 178,836,929.22 and 71,646,253.48

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Solution

The fourth proportional to 129,589,273, 178,836,929.22 and 71,646,253.48 is: 98,873,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,589,273 : 178,836,929.22 = 71,646,253.48 : x
  2. Step 2: Convert to fraction form
    129,589,273/178,836,929.22 = 71,646,253.48/x
  3. Step 3: Cross multiply
    129,589,273x = 178,836,929.22 × 71,646,253.48
  4. Step 4: Simplify right side
    129,589,273x = 12,812,995,962,480,940
  5. Step 5: Solve for x
    x = 12,812,995,962,480,940/129,589,273
  6. Step 6: Final answer
    x = 98,873,893.39

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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.