Home / 150,189.36-207,260.76-81,278.69

Finding the Fourth Proportional to 150,189.36, 207,260.76 and 81,278.69

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Solution

The fourth proportional to 150,189.36, 207,260.76 and 81,278.69 is: 112,164.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,189.36 : 207,260.76 = 81,278.69 : x
  2. Step 2: Convert to fraction form
    150,189.36/207,260.76 = 81,278.69/x
  3. Step 3: Cross multiply
    150,189.36x = 207,260.76 × 81,278.69
  4. Step 4: Simplify right side
    150,189.36x = 16,845,883,061.20
  5. Step 5: Solve for x
    x = 16,845,883,061.20/150,189.36
  6. Step 6: Final answer
    x = 112,164.29

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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.