Home / 158,728.08-218,853.18-137,178.84

Finding the Fourth Proportional to 158,728.08, 218,853.18 and 137,178.84

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Solution

The fourth proportional to 158,728.08, 218,853.18 and 137,178.84 is: 189,141.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,728.08 : 218,853.18 = 137,178.84 : x
  2. Step 2: Convert to fraction form
    158,728.08/218,853.18 = 137,178.84/x
  3. Step 3: Cross multiply
    158,728.08x = 218,853.18 × 137,178.84
  4. Step 4: Simplify right side
    158,728.08x = 30,022,025,362.71
  5. Step 5: Solve for x
    x = 30,022,025,362.71/158,728.08
  6. Step 6: Final answer
    x = 189,141.24

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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.