Home / 261,068,998.32-391,648,111.56-107,631,177.84

Finding the Fourth Proportional to 261,068,998.32, 391,648,111.56 and 107,631,177.84

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Solution

The fourth proportional to 261,068,998.32, 391,648,111.56 and 107,631,177.84 is: 161,465,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,068,998.32 : 391,648,111.56 = 107,631,177.84 : x
  2. Step 2: Convert to fraction form
    261,068,998.32/391,648,111.56 = 107,631,177.84/x
  3. Step 3: Cross multiply
    261,068,998.32x = 391,648,111.56 × 107,631,177.84
  4. Step 4: Simplify right side
    261,068,998.32x = 42,153,547,547,154,432
  5. Step 5: Solve for x
    x = 42,153,547,547,154,432/261,068,998.32
  6. Step 6: Final answer
    x = 161,465,159.85

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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.