Home / 261,053.38-391,388.55-83,458.18

Finding the Fourth Proportional to 261,053.38, 391,388.55 and 83,458.18

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Solution

The fourth proportional to 261,053.38, 391,388.55 and 83,458.18 is: 125,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,053.38 : 391,388.55 = 83,458.18 : x
  2. Step 2: Convert to fraction form
    261,053.38/391,388.55 = 83,458.18/x
  3. Step 3: Cross multiply
    261,053.38x = 391,388.55 × 83,458.18
  4. Step 4: Simplify right side
    261,053.38x = 32,664,576,055.84
  5. Step 5: Solve for x
    x = 32,664,576,055.84/261,053.38
  6. Step 6: Final answer
    x = 125,126.04

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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.