Home / 158,379.75-218,561.36-86,759.55

Finding the Fourth Proportional to 158,379.75, 218,561.36 and 86,759.55

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Solution

The fourth proportional to 158,379.75, 218,561.36 and 86,759.55 is: 119,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,379.75 : 218,561.36 = 86,759.55 : x
  2. Step 2: Convert to fraction form
    158,379.75/218,561.36 = 86,759.55/x
  3. Step 3: Cross multiply
    158,379.75x = 218,561.36 × 86,759.55
  4. Step 4: Simplify right side
    158,379.75x = 18,962,284,807.19
  5. Step 5: Solve for x
    x = 18,962,284,807.19/158,379.75
  6. Step 6: Final answer
    x = 119,726.70

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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.