Home / 158,285.13-218,454.36-90,286.53

Finding the Fourth Proportional to 158,285.13, 218,454.36 and 90,286.53

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Solution

The fourth proportional to 158,285.13, 218,454.36 and 90,286.53 is: 124,607.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,285.13 : 218,454.36 = 90,286.53 : x
  2. Step 2: Convert to fraction form
    158,285.13/218,454.36 = 90,286.53/x
  3. Step 3: Cross multiply
    158,285.13x = 218,454.36 × 90,286.53
  4. Step 4: Simplify right side
    158,285.13x = 19,723,486,127.77
  5. Step 5: Solve for x
    x = 19,723,486,127.77/158,285.13
  6. Step 6: Final answer
    x = 124,607.32

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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.