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Finding the Fourth Proportional to 170,700.40, 256,342.20 and 91,968.40

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Solution

The fourth proportional to 170,700.40, 256,342.20 and 91,968.40 is: 138,109.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,700.40 : 256,342.20 = 91,968.40 : x
  2. Step 2: Convert to fraction form
    170,700.40/256,342.20 = 91,968.40/x
  3. Step 3: Cross multiply
    170,700.40x = 256,342.20 × 91,968.40
  4. Step 4: Simplify right side
    170,700.40x = 23,575,381,986.48
  5. Step 5: Solve for x
    x = 23,575,381,986.48/170,700.40
  6. Step 6: Final answer
    x = 138,109.71

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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.