Home / 158,155.40-218,251.04-86,535.20

Finding the Fourth Proportional to 158,155.40, 218,251.04 and 86,535.20

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Solution

The fourth proportional to 158,155.40, 218,251.04 and 86,535.20 is: 119,416.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,155.40 : 218,251.04 = 86,535.20 : x
  2. Step 2: Convert to fraction form
    158,155.40/218,251.04 = 86,535.20/x
  3. Step 3: Cross multiply
    158,155.40x = 218,251.04 × 86,535.20
  4. Step 4: Simplify right side
    158,155.40x = 18,886,397,396.61
  5. Step 5: Solve for x
    x = 18,886,397,396.61/158,155.40
  6. Step 6: Final answer
    x = 119,416.71

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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.