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Finding the Fourth Proportional to 123,519.65, 170,458.46 and 72,532.98

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Solution

The fourth proportional to 123,519.65, 170,458.46 and 72,532.98 is: 100,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,519.65 : 170,458.46 = 72,532.98 : x
  2. Step 2: Convert to fraction form
    123,519.65/170,458.46 = 72,532.98/x
  3. Step 3: Cross multiply
    123,519.65x = 170,458.46 × 72,532.98
  4. Step 4: Simplify right side
    123,519.65x = 12,363,859,707.35
  5. Step 5: Solve for x
    x = 12,363,859,707.35/123,519.65
  6. Step 6: Final answer
    x = 100,096.30

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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.