Home / 106,790.40-147,468.60-85,723.92

Finding the Fourth Proportional to 106,790.40, 147,468.60 and 85,723.92

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Solution

The fourth proportional to 106,790.40, 147,468.60 and 85,723.92 is: 118,377.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,790.40 : 147,468.60 = 85,723.92 : x
  2. Step 2: Convert to fraction form
    106,790.40/147,468.60 = 85,723.92/x
  3. Step 3: Cross multiply
    106,790.40x = 147,468.60 × 85,723.92
  4. Step 4: Simplify right side
    106,790.40x = 12,641,586,468.91
  5. Step 5: Solve for x
    x = 12,641,586,468.91/106,790.40
  6. Step 6: Final answer
    x = 118,377.56

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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.