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Finding the Fourth Proportional to 103,252.48, 142,538.48 and 69,248.55

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Solution

The fourth proportional to 103,252.48, 142,538.48 and 69,248.55 is: 95,596.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,252.48 : 142,538.48 = 69,248.55 : x
  2. Step 2: Convert to fraction form
    103,252.48/142,538.48 = 69,248.55/x
  3. Step 3: Cross multiply
    103,252.48x = 142,538.48 × 69,248.55
  4. Step 4: Simplify right side
    103,252.48x = 9,870,583,059.20
  5. Step 5: Solve for x
    x = 9,870,583,059.20/103,252.48
  6. Step 6: Final answer
    x = 95,596.57

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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.