Home / 99,564.03-137,306.07-72,663.93

Finding the Fourth Proportional to 99,564.03, 137,306.07 and 72,663.93

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Solution

The fourth proportional to 99,564.03, 137,306.07 and 72,663.93 is: 100,208.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,564.03 : 137,306.07 = 72,663.93 : x
  2. Step 2: Convert to fraction form
    99,564.03/137,306.07 = 72,663.93/x
  3. Step 3: Cross multiply
    99,564.03x = 137,306.07 × 72,663.93
  4. Step 4: Simplify right side
    99,564.03x = 9,977,198,659.06
  5. Step 5: Solve for x
    x = 9,977,198,659.06/99,564.03
  6. Step 6: Final answer
    x = 100,208.87

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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.