Home / 120,252.24-165,846.60-90,108.72

Finding the Fourth Proportional to 120,252.24, 165,846.60 and 90,108.72

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Solution

The fourth proportional to 120,252.24, 165,846.60 and 90,108.72 is: 124,273.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,252.24 : 165,846.60 = 90,108.72 : x
  2. Step 2: Convert to fraction form
    120,252.24/165,846.60 = 90,108.72/x
  3. Step 3: Cross multiply
    120,252.24x = 165,846.60 × 90,108.72
  4. Step 4: Simplify right side
    120,252.24x = 14,944,224,842.35
  5. Step 5: Solve for x
    x = 14,944,224,842.35/120,252.24
  6. Step 6: Final answer
    x = 124,273.98

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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.