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Finding the Fourth Proportional to 159,886.76, 220,642.40 and 88,265.25

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Solution

The fourth proportional to 159,886.76, 220,642.40 and 88,265.25 is: 121,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,886.76 : 220,642.40 = 88,265.25 : x
  2. Step 2: Convert to fraction form
    159,886.76/220,642.40 = 88,265.25/x
  3. Step 3: Cross multiply
    159,886.76x = 220,642.40 × 88,265.25
  4. Step 4: Simplify right side
    159,886.76x = 19,475,056,817.26
  5. Step 5: Solve for x
    x = 19,475,056,817.26/159,886.76
  6. Step 6: Final answer
    x = 121,805.32

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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.