Home / 100,190.17-137,983.66-77,445.37

Finding the Fourth Proportional to 100,190.17, 137,983.66 and 77,445.37

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Solution

The fourth proportional to 100,190.17, 137,983.66 and 77,445.37 is: 106,659.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,190.17 : 137,983.66 = 77,445.37 : x
  2. Step 2: Convert to fraction form
    100,190.17/137,983.66 = 77,445.37/x
  3. Step 3: Cross multiply
    100,190.17x = 137,983.66 × 77,445.37
  4. Step 4: Simplify right side
    100,190.17x = 10,686,195,602.65
  5. Step 5: Solve for x
    x = 10,686,195,602.65/100,190.17
  6. Step 6: Final answer
    x = 106,659.12

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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.