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Finding the Fourth Proportional to 125,960.64, 173,812.82 and 77,554.88

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Solution

The fourth proportional to 125,960.64, 173,812.82 and 77,554.88 is: 107,017.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,960.64 : 173,812.82 = 77,554.88 : x
  2. Step 2: Convert to fraction form
    125,960.64/173,812.82 = 77,554.88/x
  3. Step 3: Cross multiply
    125,960.64x = 173,812.82 × 77,554.88
  4. Step 4: Simplify right side
    125,960.64x = 13,480,032,397.56
  5. Step 5: Solve for x
    x = 13,480,032,397.56/125,960.64
  6. Step 6: Final answer
    x = 107,017.81

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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.