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Finding the Fourth Proportional to 170,613.60, 255,920.37 and 91,619.16

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Solution

The fourth proportional to 170,613.60, 255,920.37 and 91,619.16 is: 137,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,613.60 : 255,920.37 = 91,619.16 : x
  2. Step 2: Convert to fraction form
    170,613.60/255,920.37 = 91,619.16/x
  3. Step 3: Cross multiply
    170,613.60x = 255,920.37 × 91,619.16
  4. Step 4: Simplify right side
    170,613.60x = 23,447,209,326.29
  5. Step 5: Solve for x
    x = 23,447,209,326.29/170,613.60
  6. Step 6: Final answer
    x = 137,428.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.