Home / 120,254.24-165,849.36-90,110.72

Finding the Fourth Proportional to 120,254.24, 165,849.36 and 90,110.72

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Solution

The fourth proportional to 120,254.24, 165,849.36 and 90,110.72 is: 124,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,254.24 : 165,849.36 = 90,110.72 : x
  2. Step 2: Convert to fraction form
    120,254.24/165,849.36 = 90,110.72/x
  3. Step 3: Cross multiply
    120,254.24x = 165,849.36 × 90,110.72
  4. Step 4: Simplify right side
    120,254.24x = 14,944,805,241.14
  5. Step 5: Solve for x
    x = 14,944,805,241.14/120,254.24
  6. Step 6: Final answer
    x = 124,276.74

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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.