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Finding the Fourth Proportional to 170,761.40, 256,171.80 and 70,866.80

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Solution

The fourth proportional to 170,761.40, 256,171.80 and 70,866.80 is: 106,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,761.40 : 256,171.80 = 70,866.80 : x
  2. Step 2: Convert to fraction form
    170,761.40/256,171.80 = 70,866.80/x
  3. Step 3: Cross multiply
    170,761.40x = 256,171.80 × 70,866.80
  4. Step 4: Simplify right side
    170,761.40x = 18,154,075,716.24
  5. Step 5: Solve for x
    x = 18,154,075,716.24/170,761.40
  6. Step 6: Final answer
    x = 106,312.53

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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.