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Finding the Fourth Proportional to 170,868.60, 256,302.90 and 123,629.40

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Solution

The fourth proportional to 170,868.60, 256,302.90 and 123,629.40 is: 185,444.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,868.60 : 256,302.90 = 123,629.40 : x
  2. Step 2: Convert to fraction form
    170,868.60/256,302.90 = 123,629.40/x
  3. Step 3: Cross multiply
    170,868.60x = 256,302.90 × 123,629.40
  4. Step 4: Simplify right side
    170,868.60x = 31,686,573,745.26
  5. Step 5: Solve for x
    x = 31,686,573,745.26/170,868.60
  6. Step 6: Final answer
    x = 185,444.10

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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.