Home / 112,587.48-155,474.03-72,371.28

Finding the Fourth Proportional to 112,587.48, 155,474.03 and 72,371.28

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Solution

The fourth proportional to 112,587.48, 155,474.03 and 72,371.28 is: 99,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,587.48 : 155,474.03 = 72,371.28 : x
  2. Step 2: Convert to fraction form
    112,587.48/155,474.03 = 72,371.28/x
  3. Step 3: Cross multiply
    112,587.48x = 155,474.03 × 72,371.28
  4. Step 4: Simplify right side
    112,587.48x = 11,251,855,321.81
  5. Step 5: Solve for x
    x = 11,251,855,321.81/112,587.48
  6. Step 6: Final answer
    x = 99,938.78

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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.