Home / 158,712.57-219,023.23-90,731.05

Finding the Fourth Proportional to 158,712.57, 219,023.23 and 90,731.05

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Solution

The fourth proportional to 158,712.57, 219,023.23 and 90,731.05 is: 125,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,712.57 : 219,023.23 = 90,731.05 : x
  2. Step 2: Convert to fraction form
    158,712.57/219,023.23 = 90,731.05/x
  3. Step 3: Cross multiply
    158,712.57x = 219,023.23 × 90,731.05
  4. Step 4: Simplify right side
    158,712.57x = 19,872,207,632.29
  5. Step 5: Solve for x
    x = 19,872,207,632.29/158,712.57
  6. Step 6: Final answer
    x = 125,208.78

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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.