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Finding the Fourth Proportional to 159,049.48, 219,488.52 and 87,429.94

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Solution

The fourth proportional to 159,049.48, 219,488.52 and 87,429.94 is: 120,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,049.48 : 219,488.52 = 87,429.94 : x
  2. Step 2: Convert to fraction form
    159,049.48/219,488.52 = 87,429.94/x
  3. Step 3: Cross multiply
    159,049.48x = 219,488.52 × 87,429.94
  4. Step 4: Simplify right side
    159,049.48x = 19,189,868,407.79
  5. Step 5: Solve for x
    x = 19,189,868,407.79/159,049.48
  6. Step 6: Final answer
    x = 120,653.45

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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.