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Finding the Fourth Proportional to 158,250.94, 218,391.45 and 86,630.96

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Solution

The fourth proportional to 158,250.94, 218,391.45 and 86,630.96 is: 119,553.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,250.94 : 218,391.45 = 86,630.96 : x
  2. Step 2: Convert to fraction form
    158,250.94/218,391.45 = 86,630.96/x
  3. Step 3: Cross multiply
    158,250.94x = 218,391.45 × 86,630.96
  4. Step 4: Simplify right side
    158,250.94x = 18,919,460,969.29
  5. Step 5: Solve for x
    x = 18,919,460,969.29/158,250.94
  6. Step 6: Final answer
    x = 119,553.55

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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.