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Finding the Fourth Proportional to 157,639.70, 236,481.15 and 52,447.70

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Solution

The fourth proportional to 157,639.70, 236,481.15 and 52,447.70 is: 78,678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,639.70 : 236,481.15 = 52,447.70 : x
  2. Step 2: Convert to fraction form
    157,639.70/236,481.15 = 52,447.70/x
  3. Step 3: Cross multiply
    157,639.70x = 236,481.15 × 52,447.70
  4. Step 4: Simplify right side
    157,639.70x = 12,402,892,410.86
  5. Step 5: Solve for x
    x = 12,402,892,410.86/157,639.70
  6. Step 6: Final answer
    x = 78,678.74

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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.