Home / 261,140.15-391,719.51-83,624.10

Finding the Fourth Proportional to 261,140.15, 391,719.51 and 83,624.10

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Solution

The fourth proportional to 261,140.15, 391,719.51 and 83,624.10 is: 125,439.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,140.15 : 391,719.51 = 83,624.10 : x
  2. Step 2: Convert to fraction form
    261,140.15/391,719.51 = 83,624.10/x
  3. Step 3: Cross multiply
    261,140.15x = 391,719.51 × 83,624.10
  4. Step 4: Simplify right side
    261,140.15x = 32,757,190,007.24
  5. Step 5: Solve for x
    x = 32,757,190,007.24/261,140.15
  6. Step 6: Final answer
    x = 125,439.12

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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.