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Finding the Fourth Proportional to 156,311.52, 215,696.76 and 88,334.40

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Solution

The fourth proportional to 156,311.52, 215,696.76 and 88,334.40 is: 121,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,311.52 : 215,696.76 = 88,334.40 : x
  2. Step 2: Convert to fraction form
    156,311.52/215,696.76 = 88,334.40/x
  3. Step 3: Cross multiply
    156,311.52x = 215,696.76 × 88,334.40
  4. Step 4: Simplify right side
    156,311.52x = 19,053,443,876.54
  5. Step 5: Solve for x
    x = 19,053,443,876.54/156,311.52
  6. Step 6: Final answer
    x = 121,894.05

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1.5x scale

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.