Home / 100,453.57-138,591.50-57,402.13

Finding the Fourth Proportional to 100,453.57, 138,591.50 and 57,402.13

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Solution

The fourth proportional to 100,453.57, 138,591.50 and 57,402.13 is: 79,195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.57 : 138,591.50 = 57,402.13 : x
  2. Step 2: Convert to fraction form
    100,453.57/138,591.50 = 57,402.13/x
  3. Step 3: Cross multiply
    100,453.57x = 138,591.50 × 57,402.13
  4. Step 4: Simplify right side
    100,453.57x = 7,955,446,606.94
  5. Step 5: Solve for x
    x = 7,955,446,606.94/100,453.57
  6. Step 6: Final answer
    x = 79,195.26

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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.