Home / 103,785.75-143,215.83-58,449.24

Finding the Fourth Proportional to 103,785.75, 143,215.83 and 58,449.24

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Solution

The fourth proportional to 103,785.75, 143,215.83 and 58,449.24 is: 80,655.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,785.75 : 143,215.83 = 58,449.24 : x
  2. Step 2: Convert to fraction form
    103,785.75/143,215.83 = 58,449.24/x
  3. Step 3: Cross multiply
    103,785.75x = 143,215.83 × 58,449.24
  4. Step 4: Simplify right side
    103,785.75x = 8,370,856,419.47
  5. Step 5: Solve for x
    x = 8,370,856,419.47/103,785.75
  6. Step 6: Final answer
    x = 80,655.16

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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.