Home / 128,084.60-176,756.06-74,382.81

Finding the Fourth Proportional to 128,084.60, 176,756.06 and 74,382.81

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Solution

The fourth proportional to 128,084.60, 176,756.06 and 74,382.81 is: 102,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,084.60 : 176,756.06 = 74,382.81 : x
  2. Step 2: Convert to fraction form
    128,084.60/176,756.06 = 74,382.81/x
  3. Step 3: Cross multiply
    128,084.60x = 176,756.06 × 74,382.81
  4. Step 4: Simplify right side
    128,084.60x = 13,147,612,613.29
  5. Step 5: Solve for x
    x = 13,147,612,613.29/128,084.60
  6. Step 6: Final answer
    x = 102,647.88

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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.