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Finding the Fourth Proportional to 103,473.74, 142,680.74 and 69,881.42

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Solution

The fourth proportional to 103,473.74, 142,680.74 and 69,881.42 is: 96,360.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,473.74 : 142,680.74 = 69,881.42 : x
  2. Step 2: Convert to fraction form
    103,473.74/142,680.74 = 69,881.42/x
  3. Step 3: Cross multiply
    103,473.74x = 142,680.74 × 69,881.42
  4. Step 4: Simplify right side
    103,473.74x = 9,970,732,717.85
  5. Step 5: Solve for x
    x = 9,970,732,717.85/103,473.74
  6. Step 6: Final answer
    x = 96,360.03

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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.