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Finding the Fourth Proportional to 170,614.60, 255,921.87 and 91,620.16

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Solution

The fourth proportional to 170,614.60, 255,921.87 and 91,620.16 is: 137,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,614.60 : 255,921.87 = 91,620.16 : x
  2. Step 2: Convert to fraction form
    170,614.60/255,921.87 = 91,620.16/x
  3. Step 3: Cross multiply
    170,614.60x = 255,921.87 × 91,620.16
  4. Step 4: Simplify right side
    170,614.60x = 23,447,602,676.90
  5. Step 5: Solve for x
    x = 23,447,602,676.90/170,614.60
  6. Step 6: Final answer
    x = 137,430.22

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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.