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Finding the Fourth Proportional to 125,398.64, 173,052.24 and 68,815.28

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Solution

The fourth proportional to 125,398.64, 173,052.24 and 68,815.28 is: 94,966.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,398.64 : 173,052.24 = 68,815.28 : x
  2. Step 2: Convert to fraction form
    125,398.64/173,052.24 = 68,815.28/x
  3. Step 3: Cross multiply
    125,398.64x = 173,052.24 × 68,815.28
  4. Step 4: Simplify right side
    125,398.64x = 11,908,638,350.23
  5. Step 5: Solve for x
    x = 11,908,638,350.23/125,398.64
  6. Step 6: Final answer
    x = 94,966.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.