Home / 155,412.48-214,470.08-91,781.68

Finding the Fourth Proportional to 155,412.48, 214,470.08 and 91,781.68

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Solution

The fourth proportional to 155,412.48, 214,470.08 and 91,781.68 is: 126,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,412.48 : 214,470.08 = 91,781.68 : x
  2. Step 2: Convert to fraction form
    155,412.48/214,470.08 = 91,781.68/x
  3. Step 3: Cross multiply
    155,412.48x = 214,470.08 × 91,781.68
  4. Step 4: Simplify right side
    155,412.48x = 19,684,424,252.13
  5. Step 5: Solve for x
    x = 19,684,424,252.13/155,412.48
  6. Step 6: Final answer
    x = 126,659.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.