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Finding the Fourth Proportional to 112,703.64, 155,531.02 and 64,960.06

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Solution

The fourth proportional to 112,703.64, 155,531.02 and 64,960.06 is: 89,644.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.64 : 155,531.02 = 64,960.06 : x
  2. Step 2: Convert to fraction form
    112,703.64/155,531.02 = 64,960.06/x
  3. Step 3: Cross multiply
    112,703.64x = 155,531.02 × 64,960.06
  4. Step 4: Simplify right side
    112,703.64x = 10,103,304,391.06
  5. Step 5: Solve for x
    x = 10,103,304,391.06/112,703.64
  6. Step 6: Final answer
    x = 89,644.88

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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.