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Finding the Fourth Proportional to 170,586.80, 255,877.80 and 77,092.40

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Solution

The fourth proportional to 170,586.80, 255,877.80 and 77,092.40 is: 115,637.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,586.80 : 255,877.80 = 77,092.40 : x
  2. Step 2: Convert to fraction form
    170,586.80/255,877.80 = 77,092.40/x
  3. Step 3: Cross multiply
    170,586.80x = 255,877.80 × 77,092.40
  4. Step 4: Simplify right side
    170,586.80x = 19,726,233,708.72
  5. Step 5: Solve for x
    x = 19,726,233,708.72/170,586.80
  6. Step 6: Final answer
    x = 115,637.52

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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.