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Finding the Fourth Proportional to 160,645.64, 221,691.56 and 89,026.88

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Solution

The fourth proportional to 160,645.64, 221,691.56 and 89,026.88 is: 122,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,645.64 : 221,691.56 = 89,026.88 : x
  2. Step 2: Convert to fraction form
    160,645.64/221,691.56 = 89,026.88/x
  3. Step 3: Cross multiply
    160,645.64x = 221,691.56 × 89,026.88
  4. Step 4: Simplify right side
    160,645.64x = 19,736,507,909.13
  5. Step 5: Solve for x
    x = 19,736,507,909.13/160,645.64
  6. Step 6: Final answer
    x = 122,857.41

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1.5x scale

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.