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Finding the Fourth Proportional to 157,876.76, 236,808.66 and 87,711.32

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Solution

The fourth proportional to 157,876.76, 236,808.66 and 87,711.32 is: 131,563.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,876.76 : 236,808.66 = 87,711.32 : x
  2. Step 2: Convert to fraction form
    157,876.76/236,808.66 = 87,711.32/x
  3. Step 3: Cross multiply
    157,876.76x = 236,808.66 × 87,711.32
  4. Step 4: Simplify right side
    157,876.76x = 20,770,800,156.03
  5. Step 5: Solve for x
    x = 20,770,800,156.03/157,876.76
  6. Step 6: Final answer
    x = 131,563.38

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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.