Home / 100,557.06-138,815.91-58,107.30

Finding the Fourth Proportional to 100,557.06, 138,815.91 and 58,107.30

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Solution

The fourth proportional to 100,557.06, 138,815.91 and 58,107.30 is: 80,215.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,557.06 : 138,815.91 = 58,107.30 : x
  2. Step 2: Convert to fraction form
    100,557.06/138,815.91 = 58,107.30/x
  3. Step 3: Cross multiply
    100,557.06x = 138,815.91 × 58,107.30
  4. Step 4: Simplify right side
    100,557.06x = 8,066,217,727.14
  5. Step 5: Solve for x
    x = 8,066,217,727.14/100,557.06
  6. Step 6: Final answer
    x = 80,215.33

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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.