Home / 120,253.24-165,847.98-90,109.72

Finding the Fourth Proportional to 120,253.24, 165,847.98 and 90,109.72

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Solution

The fourth proportional to 120,253.24, 165,847.98 and 90,109.72 is: 124,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,253.24 : 165,847.98 = 90,109.72 : x
  2. Step 2: Convert to fraction form
    120,253.24/165,847.98 = 90,109.72/x
  3. Step 3: Cross multiply
    120,253.24x = 165,847.98 × 90,109.72
  4. Step 4: Simplify right side
    120,253.24x = 14,944,515,040.37
  5. Step 5: Solve for x
    x = 14,944,515,040.37/120,253.24
  6. Step 6: Final answer
    x = 124,275.36

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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.