Home / 115,255.65-158,984.25-89,721.60

Finding the Fourth Proportional to 115,255.65, 158,984.25 and 89,721.60

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Solution

The fourth proportional to 115,255.65, 158,984.25 and 89,721.60 is: 123,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,255.65 : 158,984.25 = 89,721.60 : x
  2. Step 2: Convert to fraction form
    115,255.65/158,984.25 = 89,721.60/x
  3. Step 3: Cross multiply
    115,255.65x = 158,984.25 × 89,721.60
  4. Step 4: Simplify right side
    115,255.65x = 14,264,321,284.80
  5. Step 5: Solve for x
    x = 14,264,321,284.80/115,255.65
  6. Step 6: Final answer
    x = 123,762.45

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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.