Home / 103,663.46-155,306.56-72,006.64

Finding the Fourth Proportional to 103,663.46, 155,306.56 and 72,006.64

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Solution

The fourth proportional to 103,663.46, 155,306.56 and 72,006.64 is: 107,878.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,663.46 : 155,306.56 = 72,006.64 : x
  2. Step 2: Convert to fraction form
    103,663.46/155,306.56 = 72,006.64/x
  3. Step 3: Cross multiply
    103,663.46x = 155,306.56 × 72,006.64
  4. Step 4: Simplify right side
    103,663.46x = 11,183,103,555.56
  5. Step 5: Solve for x
    x = 11,183,103,555.56/103,663.46
  6. Step 6: Final answer
    x = 107,878.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.