Home / 115,043.28-158,759.40-64,742.32

Finding the Fourth Proportional to 115,043.28, 158,759.40 and 64,742.32

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Solution

The fourth proportional to 115,043.28, 158,759.40 and 64,742.32 is: 89,344.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,043.28 : 158,759.40 = 64,742.32 : x
  2. Step 2: Convert to fraction form
    115,043.28/158,759.40 = 64,742.32/x
  3. Step 3: Cross multiply
    115,043.28x = 158,759.40 × 64,742.32
  4. Step 4: Simplify right side
    115,043.28x = 10,278,451,877.81
  5. Step 5: Solve for x
    x = 10,278,451,877.81/115,043.28
  6. Step 6: Final answer
    x = 89,344.22

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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.