Home / 159,178.50-219,665.22-90,281.06

Finding the Fourth Proportional to 159,178.50, 219,665.22 and 90,281.06

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Solution

The fourth proportional to 159,178.50, 219,665.22 and 90,281.06 is: 124,587.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,178.50 : 219,665.22 = 90,281.06 : x
  2. Step 2: Convert to fraction form
    159,178.50/219,665.22 = 90,281.06/x
  3. Step 3: Cross multiply
    159,178.50x = 219,665.22 × 90,281.06
  4. Step 4: Simplify right side
    159,178.50x = 19,831,608,906.73
  5. Step 5: Solve for x
    x = 19,831,608,906.73/159,178.50
  6. Step 6: Final answer
    x = 124,587.23

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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.