Home / 100,228.42-138,309.28-54,897.38

Finding the Fourth Proportional to 100,228.42, 138,309.28 and 54,897.38

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Solution

The fourth proportional to 100,228.42, 138,309.28 and 54,897.38 is: 75,755.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,228.42 : 138,309.28 = 54,897.38 : x
  2. Step 2: Convert to fraction form
    100,228.42/138,309.28 = 54,897.38/x
  3. Step 3: Cross multiply
    100,228.42x = 138,309.28 × 54,897.38
  4. Step 4: Simplify right side
    100,228.42x = 7,592,817,101.69
  5. Step 5: Solve for x
    x = 7,592,817,101.69/100,228.42
  6. Step 6: Final answer
    x = 75,755.13

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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.