Home / 120,404.88-166,057.20-90,260.64

Finding the Fourth Proportional to 120,404.88, 166,057.20 and 90,260.64

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Solution

The fourth proportional to 120,404.88, 166,057.20 and 90,260.64 is: 124,483.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,404.88 : 166,057.20 = 90,260.64 : x
  2. Step 2: Convert to fraction form
    120,404.88/166,057.20 = 90,260.64/x
  3. Step 3: Cross multiply
    120,404.88x = 166,057.20 × 90,260.64
  4. Step 4: Simplify right side
    120,404.88x = 14,988,429,148.61
  5. Step 5: Solve for x
    x = 14,988,429,148.61/120,404.88
  6. Step 6: Final answer
    x = 124,483.57

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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.