Home / 136,781.12-205,169.52-70,182.80

Finding the Fourth Proportional to 136,781.12, 205,169.52 and 70,182.80

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Solution

The fourth proportional to 136,781.12, 205,169.52 and 70,182.80 is: 105,273.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,781.12 : 205,169.52 = 70,182.80 : x
  2. Step 2: Convert to fraction form
    136,781.12/205,169.52 = 70,182.80/x
  3. Step 3: Cross multiply
    136,781.12x = 205,169.52 × 70,182.80
  4. Step 4: Simplify right side
    136,781.12x = 14,399,371,388.26
  5. Step 5: Solve for x
    x = 14,399,371,388.26/136,781.12
  6. Step 6: Final answer
    x = 105,273.09

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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.