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Finding the Fourth Proportional to 159,488.81, 220,092.10 and 87,871.40

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Solution

The fourth proportional to 159,488.81, 220,092.10 and 87,871.40 is: 121,261.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,488.81 : 220,092.10 = 87,871.40 : x
  2. Step 2: Convert to fraction form
    159,488.81/220,092.10 = 87,871.40/x
  3. Step 3: Cross multiply
    159,488.81x = 220,092.10 × 87,871.40
  4. Step 4: Simplify right side
    159,488.81x = 19,339,800,955.94
  5. Step 5: Solve for x
    x = 19,339,800,955.94/159,488.81
  6. Step 6: Final answer
    x = 121,261.18

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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.