Home / 120,175.02-165,785.13-77,747.22

Finding the Fourth Proportional to 120,175.02, 165,785.13 and 77,747.22

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Solution

The fourth proportional to 120,175.02, 165,785.13 and 77,747.22 is: 107,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,175.02 : 165,785.13 = 77,747.22 : x
  2. Step 2: Convert to fraction form
    120,175.02/165,785.13 = 77,747.22/x
  3. Step 3: Cross multiply
    120,175.02x = 165,785.13 × 77,747.22
  4. Step 4: Simplify right side
    120,175.02x = 12,889,332,974.84
  5. Step 5: Solve for x
    x = 12,889,332,974.84/120,175.02
  6. Step 6: Final answer
    x = 107,254.68

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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.