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Finding the Fourth Proportional to 103,167.75, 142,373.67 and 58,455.75

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Solution

The fourth proportional to 103,167.75, 142,373.67 and 58,455.75 is: 80,670.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,167.75 : 142,373.67 = 58,455.75 : x
  2. Step 2: Convert to fraction form
    103,167.75/142,373.67 = 58,455.75/x
  3. Step 3: Cross multiply
    103,167.75x = 142,373.67 × 58,455.75
  4. Step 4: Simplify right side
    103,167.75x = 8,322,559,660.10
  5. Step 5: Solve for x
    x = 8,322,559,660.10/103,167.75
  6. Step 6: Final answer
    x = 80,670.17

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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.