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Finding the Fourth Proportional to 159,687.45, 220,366.98 and 88,070.49

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Solution

The fourth proportional to 159,687.45, 220,366.98 and 88,070.49 is: 121,536.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,687.45 : 220,366.98 = 88,070.49 : x
  2. Step 2: Convert to fraction form
    159,687.45/220,366.98 = 88,070.49/x
  3. Step 3: Cross multiply
    159,687.45x = 220,366.98 × 88,070.49
  4. Step 4: Simplify right side
    159,687.45x = 19,407,827,908.42
  5. Step 5: Solve for x
    x = 19,407,827,908.42/159,687.45
  6. Step 6: Final answer
    x = 121,536.34

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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.