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Finding the Fourth Proportional to 99,672.12, 137,547.72 and 63,862.29

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Solution

The fourth proportional to 99,672.12, 137,547.72 and 63,862.29 is: 88,130.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,672.12 : 137,547.72 = 63,862.29 : x
  2. Step 2: Convert to fraction form
    99,672.12/137,547.72 = 63,862.29/x
  3. Step 3: Cross multiply
    99,672.12x = 137,547.72 × 63,862.29
  4. Step 4: Simplify right side
    99,672.12x = 8,784,112,383.48
  5. Step 5: Solve for x
    x = 8,784,112,383.48/99,672.12
  6. Step 6: Final answer
    x = 88,130.08

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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.