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Finding the Fourth Proportional to 158,114.52, 218,202.12 and 86,497.56

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Solution

The fourth proportional to 158,114.52, 218,202.12 and 86,497.56 is: 119,368.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,114.52 : 218,202.12 = 86,497.56 : x
  2. Step 2: Convert to fraction form
    158,114.52/218,202.12 = 86,497.56/x
  3. Step 3: Cross multiply
    158,114.52x = 218,202.12 × 86,497.56
  4. Step 4: Simplify right side
    158,114.52x = 18,873,950,966.83
  5. Step 5: Solve for x
    x = 18,873,950,966.83/158,114.52
  6. Step 6: Final answer
    x = 119,368.87

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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.