Home / 100,426.30-138,587.09-57,983.92

Finding the Fourth Proportional to 100,426.30, 138,587.09 and 57,983.92

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Solution

The fourth proportional to 100,426.30, 138,587.09 and 57,983.92 is: 80,017.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,426.30 : 138,587.09 = 57,983.92 : x
  2. Step 2: Convert to fraction form
    100,426.30/138,587.09 = 57,983.92/x
  3. Step 3: Cross multiply
    100,426.30x = 138,587.09 × 57,983.92
  4. Step 4: Simplify right side
    100,426.30x = 8,035,822,103.21
  5. Step 5: Solve for x
    x = 8,035,822,103.21/100,426.30
  6. Step 6: Final answer
    x = 80,017.11

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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.