Home / 100,290.32-138,398.28-57,846.48

Finding the Fourth Proportional to 100,290.32, 138,398.28 and 57,846.48

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Solution

The fourth proportional to 100,290.32, 138,398.28 and 57,846.48 is: 79,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,290.32 : 138,398.28 = 57,846.48 : x
  2. Step 2: Convert to fraction form
    100,290.32/138,398.28 = 57,846.48/x
  3. Step 3: Cross multiply
    100,290.32x = 138,398.28 × 57,846.48
  4. Step 4: Simplify right side
    100,290.32x = 8,005,853,336.05
  5. Step 5: Solve for x
    x = 8,005,853,336.05/100,290.32
  6. Step 6: Final answer
    x = 79,826.78

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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.