Home / 103,785.24-143,215.12-58,448.76

Finding the Fourth Proportional to 103,785.24, 143,215.12 and 58,448.76

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Solution

The fourth proportional to 103,785.24, 143,215.12 and 58,448.76 is: 80,654.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,785.24 : 143,215.12 = 58,448.76 : x
  2. Step 2: Convert to fraction form
    103,785.24/143,215.12 = 58,448.76/x
  3. Step 3: Cross multiply
    103,785.24x = 143,215.12 × 58,448.76
  4. Step 4: Simplify right side
    103,785.24x = 8,370,746,177.25
  5. Step 5: Solve for x
    x = 8,370,746,177.25/103,785.24
  6. Step 6: Final answer
    x = 80,654.50

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Half scale
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Double scale
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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.