Home / 112,777.45-155,631.17-61,789.77

Finding the Fourth Proportional to 112,777.45, 155,631.17 and 61,789.77

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Solution

The fourth proportional to 112,777.45, 155,631.17 and 61,789.77 is: 85,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,777.45 : 155,631.17 = 61,789.77 : x
  2. Step 2: Convert to fraction form
    112,777.45/155,631.17 = 61,789.77/x
  3. Step 3: Cross multiply
    112,777.45x = 155,631.17 × 61,789.77
  4. Step 4: Simplify right side
    112,777.45x = 9,616,414,353.61
  5. Step 5: Solve for x
    x = 9,616,414,353.61/112,777.45
  6. Step 6: Final answer
    x = 85,268.95

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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.