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Finding the Fourth Proportional to 159,962.40, 239,828.40 and 89,863.20

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Solution

The fourth proportional to 159,962.40, 239,828.40 and 89,863.20 is: 134,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,962.40 : 239,828.40 = 89,863.20 : x
  2. Step 2: Convert to fraction form
    159,962.40/239,828.40 = 89,863.20/x
  3. Step 3: Cross multiply
    159,962.40x = 239,828.40 × 89,863.20
  4. Step 4: Simplify right side
    159,962.40x = 21,551,747,474.88
  5. Step 5: Solve for x
    x = 21,551,747,474.88/159,962.40
  6. Step 6: Final answer
    x = 134,730.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.