Home / 158,247.17-218,406.53-90,286.31

Finding the Fourth Proportional to 158,247.17, 218,406.53 and 90,286.31

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Solution

The fourth proportional to 158,247.17, 218,406.53 and 90,286.31 is: 124,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,247.17 : 218,406.53 = 90,286.31 : x
  2. Step 2: Convert to fraction form
    158,247.17/218,406.53 = 90,286.31/x
  3. Step 3: Cross multiply
    158,247.17x = 218,406.53 × 90,286.31
  4. Step 4: Simplify right side
    158,247.17x = 19,719,119,222.17
  5. Step 5: Solve for x
    x = 19,719,119,222.17/158,247.17
  6. Step 6: Final answer
    x = 124,609.62

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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.