Home / 261,068,998.87-391,648,112.39-107,631,178.39

Finding the Fourth Proportional to 261,068,998.87, 391,648,112.39 and 107,631,178.39

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Solution

The fourth proportional to 261,068,998.87, 391,648,112.39 and 107,631,178.39 is: 161,465,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,068,998.87 : 391,648,112.39 = 107,631,178.39 : x
  2. Step 2: Convert to fraction form
    261,068,998.87/391,648,112.39 = 107,631,178.39/x
  3. Step 3: Cross multiply
    261,068,998.87x = 391,648,112.39 × 107,631,178.39
  4. Step 4: Simplify right side
    261,068,998.87x = 42,153,547,850,216,704
  5. Step 5: Solve for x
    x = 42,153,547,850,216,704/261,068,998.87
  6. Step 6: Final answer
    x = 161,465,160.68

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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.