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Finding the Fourth Proportional to 155,957.96, 215,222.12 and 91,414.32

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Solution

The fourth proportional to 155,957.96, 215,222.12 and 91,414.32 is: 126,151.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,957.96 : 215,222.12 = 91,414.32 : x
  2. Step 2: Convert to fraction form
    155,957.96/215,222.12 = 91,414.32/x
  3. Step 3: Cross multiply
    155,957.96x = 215,222.12 × 91,414.32
  4. Step 4: Simplify right side
    155,957.96x = 19,674,383,748.76
  5. Step 5: Solve for x
    x = 19,674,383,748.76/155,957.96
  6. Step 6: Final answer
    x = 126,151.84

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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.