Home / 158,403.38-218,596.84-86,787.98

Finding the Fourth Proportional to 158,403.38, 218,596.84 and 86,787.98

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Solution

The fourth proportional to 158,403.38, 218,596.84 and 86,787.98 is: 119,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,403.38 : 218,596.84 = 86,787.98 : x
  2. Step 2: Convert to fraction form
    158,403.38/218,596.84 = 86,787.98/x
  3. Step 3: Cross multiply
    158,403.38x = 218,596.84 × 86,787.98
  4. Step 4: Simplify right side
    158,403.38x = 18,971,578,177.98
  5. Step 5: Solve for x
    x = 18,971,578,177.98/158,403.38
  6. Step 6: Final answer
    x = 119,767.51

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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.