Home / 100,365.32-138,505.91-55,042.90

Finding the Fourth Proportional to 100,365.32, 138,505.91 and 55,042.90

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Solution

The fourth proportional to 100,365.32, 138,505.91 and 55,042.90 is: 75,960.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,365.32 : 138,505.91 = 55,042.90 : x
  2. Step 2: Convert to fraction form
    100,365.32/138,505.91 = 55,042.90/x
  3. Step 3: Cross multiply
    100,365.32x = 138,505.91 × 55,042.90
  4. Step 4: Simplify right side
    100,365.32x = 7,623,767,560.91
  5. Step 5: Solve for x
    x = 7,623,767,560.91/100,365.32
  6. Step 6: Final answer
    x = 75,960.18

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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.