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Finding the Fourth Proportional to 156,324.86, 215,740.93 and 88,356

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Solution

The fourth proportional to 156,324.86, 215,740.93 and 88,356 is: 121,938.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,324.86 : 215,740.93 = 88,356 : x
  2. Step 2: Convert to fraction form
    156,324.86/215,740.93 = 88,356/x
  3. Step 3: Cross multiply
    156,324.86x = 215,740.93 × 88,356
  4. Step 4: Simplify right side
    156,324.86x = 19,062,005,611.08
  5. Step 5: Solve for x
    x = 19,062,005,611.08/156,324.86
  6. Step 6: Final answer
    x = 121,938.41

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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.