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Finding the Fourth Proportional to 103,616.88, 142,991.04 and 58,294.89

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Solution

The fourth proportional to 103,616.88, 142,991.04 and 58,294.89 is: 80,446.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.88 : 142,991.04 = 58,294.89 : x
  2. Step 2: Convert to fraction form
    103,616.88/142,991.04 = 58,294.89/x
  3. Step 3: Cross multiply
    103,616.88x = 142,991.04 × 58,294.89
  4. Step 4: Simplify right side
    103,616.88x = 8,335,646,947.79
  5. Step 5: Solve for x
    x = 8,335,646,947.79/103,616.88
  6. Step 6: Final answer
    x = 80,446.81

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1.5x scale

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.