Home / 159,568.12-220,150.20-99,117.28

Finding the Fourth Proportional to 159,568.12, 220,150.20 and 99,117.28

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Solution

The fourth proportional to 159,568.12, 220,150.20 and 99,117.28 is: 136,748.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,568.12 : 220,150.20 = 99,117.28 : x
  2. Step 2: Convert to fraction form
    159,568.12/220,150.20 = 99,117.28/x
  3. Step 3: Cross multiply
    159,568.12x = 220,150.20 × 99,117.28
  4. Step 4: Simplify right side
    159,568.12x = 21,820,689,015.46
  5. Step 5: Solve for x
    x = 21,820,689,015.46/159,568.12
  6. Step 6: Final answer
    x = 136,748.42

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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.