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Finding the Fourth Proportional to 158,125.96, 218,212.54 and 86,506.57

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Solution

The fourth proportional to 158,125.96, 218,212.54 and 86,506.57 is: 119,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,125.96 : 218,212.54 = 86,506.57 : x
  2. Step 2: Convert to fraction form
    158,125.96/218,212.54 = 86,506.57/x
  3. Step 3: Cross multiply
    158,125.96x = 218,212.54 × 86,506.57
  4. Step 4: Simplify right side
    158,125.96x = 18,876,818,366.39
  5. Step 5: Solve for x
    x = 18,876,818,366.39/158,125.96
  6. Step 6: Final answer
    x = 119,378.36

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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.