Home / 120,238.02-165,872.07-77,810.22

Finding the Fourth Proportional to 120,238.02, 165,872.07 and 77,810.22

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Solution

The fourth proportional to 120,238.02, 165,872.07 and 77,810.22 is: 107,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,238.02 : 165,872.07 = 77,810.22 : x
  2. Step 2: Convert to fraction form
    120,238.02/165,872.07 = 77,810.22/x
  3. Step 3: Cross multiply
    120,238.02x = 165,872.07 × 77,810.22
  4. Step 4: Simplify right side
    120,238.02x = 12,906,542,258.56
  5. Step 5: Solve for x
    x = 12,906,542,258.56/120,238.02
  6. Step 6: Final answer
    x = 107,341.61

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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.