Home / 122,479.12-169,039.68-74,760.20

Finding the Fourth Proportional to 122,479.12, 169,039.68 and 74,760.20

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Solution

The fourth proportional to 122,479.12, 169,039.68 and 74,760.20 is: 103,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,479.12 : 169,039.68 = 74,760.20 : x
  2. Step 2: Convert to fraction form
    122,479.12/169,039.68 = 74,760.20/x
  3. Step 3: Cross multiply
    122,479.12x = 169,039.68 × 74,760.20
  4. Step 4: Simplify right side
    122,479.12x = 12,637,440,284.74
  5. Step 5: Solve for x
    x = 12,637,440,284.74/122,479.12
  6. Step 6: Final answer
    x = 103,180.36

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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.