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Finding the Fourth Proportional to 159,722.16, 220,417.92 and 88,100.40

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Solution

The fourth proportional to 159,722.16, 220,417.92 and 88,100.40 is: 121,579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,722.16 : 220,417.92 = 88,100.40 : x
  2. Step 2: Convert to fraction form
    159,722.16/220,417.92 = 88,100.40/x
  3. Step 3: Cross multiply
    159,722.16x = 220,417.92 × 88,100.40
  4. Step 4: Simplify right side
    159,722.16x = 19,418,906,919.17
  5. Step 5: Solve for x
    x = 19,418,906,919.17/159,722.16
  6. Step 6: Final answer
    x = 121,579.29

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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.