Home / 158,285.94-218,452.10-90,319.65

Finding the Fourth Proportional to 158,285.94, 218,452.10 and 90,319.65

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Solution

The fourth proportional to 158,285.94, 218,452.10 and 90,319.65 is: 124,651.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,285.94 : 218,452.10 = 90,319.65 : x
  2. Step 2: Convert to fraction form
    158,285.94/218,452.10 = 90,319.65/x
  3. Step 3: Cross multiply
    158,285.94x = 218,452.10 × 90,319.65
  4. Step 4: Simplify right side
    158,285.94x = 19,730,517,213.77
  5. Step 5: Solve for x
    x = 19,730,517,213.77/158,285.94
  6. Step 6: Final answer
    x = 124,651.10

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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.