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Finding the Fourth Proportional to 150,659.97, 207,901.80 and 86,136.18

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Solution

The fourth proportional to 150,659.97, 207,901.80 and 86,136.18 is: 118,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,659.97 : 207,901.80 = 86,136.18 : x
  2. Step 2: Convert to fraction form
    150,659.97/207,901.80 = 86,136.18/x
  3. Step 3: Cross multiply
    150,659.97x = 207,901.80 × 86,136.18
  4. Step 4: Simplify right side
    150,659.97x = 17,907,866,867.12
  5. Step 5: Solve for x
    x = 17,907,866,867.12/150,659.97
  6. Step 6: Final answer
    x = 118,862.81

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1.5x scale

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.