Home / 272,391.42-408,587.13-85,417.50

Finding the Fourth Proportional to 272,391.42, 408,587.13 and 85,417.50

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Solution

The fourth proportional to 272,391.42, 408,587.13 and 85,417.50 is: 128,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,391.42 : 408,587.13 = 85,417.50 : x
  2. Step 2: Convert to fraction form
    272,391.42/408,587.13 = 85,417.50/x
  3. Step 3: Cross multiply
    272,391.42x = 408,587.13 × 85,417.50
  4. Step 4: Simplify right side
    272,391.42x = 34,900,491,176.78
  5. Step 5: Solve for x
    x = 34,900,491,176.78/272,391.42
  6. Step 6: Final answer
    x = 128,126.25

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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.