Home / 100,278.90-138,348.27-59,993.82

Finding the Fourth Proportional to 100,278.90, 138,348.27 and 59,993.82

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Solution

The fourth proportional to 100,278.90, 138,348.27 and 59,993.82 is: 82,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,278.90 : 138,348.27 = 59,993.82 : x
  2. Step 2: Convert to fraction form
    100,278.90/138,348.27 = 59,993.82/x
  3. Step 3: Cross multiply
    100,278.90x = 138,348.27 × 59,993.82
  4. Step 4: Simplify right side
    100,278.90x = 8,300,041,207.69
  5. Step 5: Solve for x
    x = 8,300,041,207.69/100,278.90
  6. Step 6: Final answer
    x = 82,769.57

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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.