Home / 154,149.57-212,724.80-90,475.07

Finding the Fourth Proportional to 154,149.57, 212,724.80 and 90,475.07

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Solution

The fourth proportional to 154,149.57, 212,724.80 and 90,475.07 is: 124,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,149.57 : 212,724.80 = 90,475.07 : x
  2. Step 2: Convert to fraction form
    154,149.57/212,724.80 = 90,475.07/x
  3. Step 3: Cross multiply
    154,149.57x = 212,724.80 × 90,475.07
  4. Step 4: Simplify right side
    154,149.57x = 19,246,290,865.11
  5. Step 5: Solve for x
    x = 19,246,290,865.11/154,149.57
  6. Step 6: Final answer
    x = 124,854.65

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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.