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Finding the Fourth Proportional to 170,235.42, 255,370.41 and 65,142.78

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Solution

The fourth proportional to 170,235.42, 255,370.41 and 65,142.78 is: 97,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,235.42 : 255,370.41 = 65,142.78 : x
  2. Step 2: Convert to fraction form
    170,235.42/255,370.41 = 65,142.78/x
  3. Step 3: Cross multiply
    170,235.42x = 255,370.41 × 65,142.78
  4. Step 4: Simplify right side
    170,235.42x = 16,635,538,437.14
  5. Step 5: Solve for x
    x = 16,635,538,437.14/170,235.42
  6. Step 6: Final answer
    x = 97,720.78

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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.