Home / 105,449.38-145,520.15-57,702.74

Finding the Fourth Proportional to 105,449.38, 145,520.15 and 57,702.74

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Solution

The fourth proportional to 105,449.38, 145,520.15 and 57,702.74 is: 79,629.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,449.38 : 145,520.15 = 57,702.74 : x
  2. Step 2: Convert to fraction form
    105,449.38/145,520.15 = 57,702.74/x
  3. Step 3: Cross multiply
    105,449.38x = 145,520.15 × 57,702.74
  4. Step 4: Simplify right side
    105,449.38x = 8,396,910,364.10
  5. Step 5: Solve for x
    x = 8,396,910,364.10/105,449.38
  6. Step 6: Final answer
    x = 79,629.77

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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.