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Finding the Fourth Proportional to 112,413, 155,062.08 and 74,158.92

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Solution

The fourth proportional to 112,413, 155,062.08 and 74,158.92 is: 102,294.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,413 : 155,062.08 = 74,158.92 : x
  2. Step 2: Convert to fraction form
    112,413/155,062.08 = 74,158.92/x
  3. Step 3: Cross multiply
    112,413x = 155,062.08 × 74,158.92
  4. Step 4: Simplify right side
    112,413x = 11,499,236,385.75
  5. Step 5: Solve for x
    x = 11,499,236,385.75/112,413
  6. Step 6: Final answer
    x = 102,294.54

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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.