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Finding the Fourth Proportional to 122,338.79, 168,749.79 and 88,397.12

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Solution

The fourth proportional to 122,338.79, 168,749.79 and 88,397.12 is: 121,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,338.79 : 168,749.79 = 88,397.12 : x
  2. Step 2: Convert to fraction form
    122,338.79/168,749.79 = 88,397.12/x
  3. Step 3: Cross multiply
    122,338.79x = 168,749.79 × 88,397.12
  4. Step 4: Simplify right side
    122,338.79x = 14,916,995,436.60
  5. Step 5: Solve for x
    x = 14,916,995,436.60/122,338.79
  6. Step 6: Final answer
    x = 121,931.85

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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.