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Finding the Fourth Proportional to 170,220.28, 255,347.90 and 65,127.64

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Solution

The fourth proportional to 170,220.28, 255,347.90 and 65,127.64 is: 97,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,220.28 : 255,347.90 = 65,127.64 : x
  2. Step 2: Convert to fraction form
    170,220.28/255,347.90 = 65,127.64/x
  3. Step 3: Cross multiply
    170,220.28x = 255,347.90 × 65,127.64
  4. Step 4: Simplify right side
    170,220.28x = 16,630,206,105.96
  5. Step 5: Solve for x
    x = 16,630,206,105.96/170,220.28
  6. Step 6: Final answer
    x = 97,698.15

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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.