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Finding the Fourth Proportional to 169,986.20, 254,971.20 and 57,655.40

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Solution

The fourth proportional to 169,986.20, 254,971.20 and 57,655.40 is: 86,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,986.20 : 254,971.20 = 57,655.40 : x
  2. Step 2: Convert to fraction form
    169,986.20/254,971.20 = 57,655.40/x
  3. Step 3: Cross multiply
    169,986.20x = 254,971.20 × 57,655.40
  4. Step 4: Simplify right side
    169,986.20x = 14,700,466,524.48
  5. Step 5: Solve for x
    x = 14,700,466,524.48/169,986.20
  6. Step 6: Final answer
    x = 86,480.35

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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.