Home / 103,640.97-143,025.15-58,319.72

Finding the Fourth Proportional to 103,640.97, 143,025.15 and 58,319.72

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Solution

The fourth proportional to 103,640.97, 143,025.15 and 58,319.72 is: 80,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.97 : 143,025.15 = 58,319.72 : x
  2. Step 2: Convert to fraction form
    103,640.97/143,025.15 = 58,319.72/x
  3. Step 3: Cross multiply
    103,640.97x = 143,025.15 × 58,319.72
  4. Step 4: Simplify right side
    103,640.97x = 8,341,185,985.83
  5. Step 5: Solve for x
    x = 8,341,185,985.83/103,640.97
  6. Step 6: Final answer
    x = 80,481.55

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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.