Home / 261,054.38-391,390.05-83,459.18

Finding the Fourth Proportional to 261,054.38, 391,390.05 and 83,459.18

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Solution

The fourth proportional to 261,054.38, 391,390.05 and 83,459.18 is: 125,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,054.38 : 391,390.05 = 83,459.18 : x
  2. Step 2: Convert to fraction form
    261,054.38/391,390.05 = 83,459.18/x
  3. Step 3: Cross multiply
    261,054.38x = 391,390.05 × 83,459.18
  4. Step 4: Simplify right side
    261,054.38x = 32,665,092,633.16
  5. Step 5: Solve for x
    x = 32,665,092,633.16/261,054.38
  6. Step 6: Final answer
    x = 125,127.54

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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.