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Finding the Fourth Proportional to 173,866.80, 260,848.80 and 85,123.20

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Solution

The fourth proportional to 173,866.80, 260,848.80 and 85,123.20 is: 127,708.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,866.80 : 260,848.80 = 85,123.20 : x
  2. Step 2: Convert to fraction form
    173,866.80/260,848.80 = 85,123.20/x
  3. Step 3: Cross multiply
    173,866.80x = 260,848.80 × 85,123.20
  4. Step 4: Simplify right side
    173,866.80x = 22,204,284,572.16
  5. Step 5: Solve for x
    x = 22,204,284,572.16/173,866.80
  6. Step 6: Final answer
    x = 127,708.59

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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.