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Finding the Fourth Proportional to 162,720.36, 244,117.36 and 87,838.90

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Solution

The fourth proportional to 162,720.36, 244,117.36 and 87,838.90 is: 131,778.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,720.36 : 244,117.36 = 87,838.90 : x
  2. Step 2: Convert to fraction form
    162,720.36/244,117.36 = 87,838.90/x
  3. Step 3: Cross multiply
    162,720.36x = 244,117.36 × 87,838.90
  4. Step 4: Simplify right side
    162,720.36x = 21,443,000,373.30
  5. Step 5: Solve for x
    x = 21,443,000,373.30/162,720.36
  6. Step 6: Final answer
    x = 131,778.23

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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.