Home / 100,562.91-138,776.65-55,242.06

Finding the Fourth Proportional to 100,562.91, 138,776.65 and 55,242.06

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Solution

The fourth proportional to 100,562.91, 138,776.65 and 55,242.06 is: 76,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,562.91 : 138,776.65 = 55,242.06 : x
  2. Step 2: Convert to fraction form
    100,562.91/138,776.65 = 55,242.06/x
  3. Step 3: Cross multiply
    100,562.91x = 138,776.65 × 55,242.06
  4. Step 4: Simplify right side
    100,562.91x = 7,666,308,025.90
  5. Step 5: Solve for x
    x = 7,666,308,025.90/100,562.91
  6. Step 6: Final answer
    x = 76,233.95

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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.