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Finding the Fourth Proportional to 170,757.40, 256,165.80 and 70,862.80

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Solution

The fourth proportional to 170,757.40, 256,165.80 and 70,862.80 is: 106,306.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,757.40 : 256,165.80 = 70,862.80 : x
  2. Step 2: Convert to fraction form
    170,757.40/256,165.80 = 70,862.80/x
  3. Step 3: Cross multiply
    170,757.40x = 256,165.80 × 70,862.80
  4. Step 4: Simplify right side
    170,757.40x = 18,152,625,852.24
  5. Step 5: Solve for x
    x = 18,152,625,852.24/170,757.40
  6. Step 6: Final answer
    x = 106,306.53

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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.