Home / 261,109,250.96-391,580,781.64-86,199,717.92

Finding the Fourth Proportional to 261,109,250.96, 391,580,781.64 and 86,199,717.92

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Solution

The fourth proportional to 261,109,250.96, 391,580,781.64 and 86,199,717.92 is: 129,272,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,109,250.96 : 391,580,781.64 = 86,199,717.92 : x
  2. Step 2: Convert to fraction form
    261,109,250.96/391,580,781.64 = 86,199,717.92/x
  3. Step 3: Cross multiply
    261,109,250.96x = 391,580,781.64 × 86,199,717.92
  4. Step 4: Simplify right side
    261,109,250.96x = 33,754,152,918,087,712
  5. Step 5: Solve for x
    x = 33,754,152,918,087,712/261,109,250.96
  6. Step 6: Final answer
    x = 129,272,144.88

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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.