Home / 158,357.28-218,472.25-90,378.03

Finding the Fourth Proportional to 158,357.28, 218,472.25 and 90,378.03

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Solution

The fourth proportional to 158,357.28, 218,472.25 and 90,378.03 is: 124,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,357.28 : 218,472.25 = 90,378.03 : x
  2. Step 2: Convert to fraction form
    158,357.28/218,472.25 = 90,378.03/x
  3. Step 3: Cross multiply
    158,357.28x = 218,472.25 × 90,378.03
  4. Step 4: Simplify right side
    158,357.28x = 19,745,091,564.67
  5. Step 5: Solve for x
    x = 19,745,091,564.67/158,357.28
  6. Step 6: Final answer
    x = 124,686.98

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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.