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Finding the Fourth Proportional to 113,488.40, 169,925.40 and 88,912.40

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Solution

The fourth proportional to 113,488.40, 169,925.40 and 88,912.40 is: 133,127.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,488.40 : 169,925.40 = 88,912.40 : x
  2. Step 2: Convert to fraction form
    113,488.40/169,925.40 = 88,912.40/x
  3. Step 3: Cross multiply
    113,488.40x = 169,925.40 × 88,912.40
  4. Step 4: Simplify right side
    113,488.40x = 15,108,475,134.96
  5. Step 5: Solve for x
    x = 15,108,475,134.96/113,488.40
  6. Step 6: Final answer
    x = 133,127.92

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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.