Home / 128,080.55-176,761.27-74,382.41

Finding the Fourth Proportional to 128,080.55, 176,761.27 and 74,382.41

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Solution

The fourth proportional to 128,080.55, 176,761.27 and 74,382.41 is: 102,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,080.55 : 176,761.27 = 74,382.41 : x
  2. Step 2: Convert to fraction form
    128,080.55/176,761.27 = 74,382.41/x
  3. Step 3: Cross multiply
    128,080.55x = 176,761.27 × 74,382.41
  4. Step 4: Simplify right side
    128,080.55x = 13,147,929,792.14
  5. Step 5: Solve for x
    x = 13,147,929,792.14/128,080.55
  6. Step 6: Final answer
    x = 102,653.60

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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.