Home / 157,105.32-235,473.39-72,687.12

Finding the Fourth Proportional to 157,105.32, 235,473.39 and 72,687.12

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Solution

The fourth proportional to 157,105.32, 235,473.39 and 72,687.12 is: 108,945.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,105.32 : 235,473.39 = 72,687.12 : x
  2. Step 2: Convert to fraction form
    157,105.32/235,473.39 = 72,687.12/x
  3. Step 3: Cross multiply
    157,105.32x = 235,473.39 × 72,687.12
  4. Step 4: Simplify right side
    157,105.32x = 17,115,882,555.74
  5. Step 5: Solve for x
    x = 17,115,882,555.74/157,105.32
  6. Step 6: Final answer
    x = 108,945.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.