Home / 82,432.78-123,456.86-60,190.98

Finding the Fourth Proportional to 82,432.78, 123,456.86 and 60,190.98

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Solution

The fourth proportional to 82,432.78, 123,456.86 and 60,190.98 is: 90,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,432.78 : 123,456.86 = 60,190.98 : x
  2. Step 2: Convert to fraction form
    82,432.78/123,456.86 = 60,190.98/x
  3. Step 3: Cross multiply
    82,432.78x = 123,456.86 × 60,190.98
  4. Step 4: Simplify right side
    82,432.78x = 7,430,989,391.12
  5. Step 5: Solve for x
    x = 7,430,989,391.12/82,432.78
  6. Step 6: Final answer
    x = 90,146.05

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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.