Home / 151,629.12-209,250.36-87,986.16

Finding the Fourth Proportional to 151,629.12, 209,250.36 and 87,986.16

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Solution

The fourth proportional to 151,629.12, 209,250.36 and 87,986.16 is: 121,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,629.12 : 209,250.36 = 87,986.16 : x
  2. Step 2: Convert to fraction form
    151,629.12/209,250.36 = 87,986.16/x
  3. Step 3: Cross multiply
    151,629.12x = 209,250.36 × 87,986.16
  4. Step 4: Simplify right side
    151,629.12x = 18,411,135,655.02
  5. Step 5: Solve for x
    x = 18,411,135,655.02/151,629.12
  6. Step 6: Final answer
    x = 121,422.16

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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.