Home / 128,033.16-176,668.20-71,433.60

Finding the Fourth Proportional to 128,033.16, 176,668.20 and 71,433.60

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Solution

The fourth proportional to 128,033.16, 176,668.20 and 71,433.60 is: 98,568.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,033.16 : 176,668.20 = 71,433.60 : x
  2. Step 2: Convert to fraction form
    128,033.16/176,668.20 = 71,433.60/x
  3. Step 3: Cross multiply
    128,033.16x = 176,668.20 × 71,433.60
  4. Step 4: Simplify right side
    128,033.16x = 12,620,045,531.52
  5. Step 5: Solve for x
    x = 12,620,045,531.52/128,033.16
  6. Step 6: Final answer
    x = 98,568.57

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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.