Home / 261,068,998.90-391,648,112.43-107,631,178.42

Finding the Fourth Proportional to 261,068,998.90, 391,648,112.43 and 107,631,178.42

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Solution

The fourth proportional to 261,068,998.90, 391,648,112.43 and 107,631,178.42 is: 161,465,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,068,998.90 : 391,648,112.43 = 107,631,178.42 : x
  2. Step 2: Convert to fraction form
    261,068,998.90/391,648,112.43 = 107,631,178.42/x
  3. Step 3: Cross multiply
    261,068,998.90x = 391,648,112.43 × 107,631,178.42
  4. Step 4: Simplify right side
    261,068,998.90x = 42,153,547,866,809,552
  5. Step 5: Solve for x
    x = 42,153,547,866,809,552/261,068,998.90
  6. Step 6: Final answer
    x = 161,465,160.72

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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.