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Finding the Fourth Proportional to 159,013.44, 219,438.40 and 87,398.08

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Solution

The fourth proportional to 159,013.44, 219,438.40 and 87,398.08 is: 120,609.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,013.44 : 219,438.40 = 87,398.08 : x
  2. Step 2: Convert to fraction form
    159,013.44/219,438.40 = 87,398.08/x
  3. Step 3: Cross multiply
    159,013.44x = 219,438.40 × 87,398.08
  4. Step 4: Simplify right side
    159,013.44x = 19,178,494,838.27
  5. Step 5: Solve for x
    x = 19,178,494,838.27/159,013.44
  6. Step 6: Final answer
    x = 120,609.27

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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.