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Finding the Fourth Proportional to 101,502.96, 140,064.42 and 68,730.63

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Solution

The fourth proportional to 101,502.96, 140,064.42 and 68,730.63 is: 94,841.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,502.96 : 140,064.42 = 68,730.63 : x
  2. Step 2: Convert to fraction form
    101,502.96/140,064.42 = 68,730.63/x
  3. Step 3: Cross multiply
    101,502.96x = 140,064.42 × 68,730.63
  4. Step 4: Simplify right side
    101,502.96x = 9,626,715,827.18
  5. Step 5: Solve for x
    x = 9,626,715,827.18/101,502.96
  6. Step 6: Final answer
    x = 94,841.73

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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.