Home / 153,399.90-229,667.28-81,189.24

Finding the Fourth Proportional to 153,399.90, 229,667.28 and 81,189.24

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Solution

The fourth proportional to 153,399.90, 229,667.28 and 81,189.24 is: 121,554.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,399.90 : 229,667.28 = 81,189.24 : x
  2. Step 2: Convert to fraction form
    153,399.90/229,667.28 = 81,189.24/x
  3. Step 3: Cross multiply
    153,399.90x = 229,667.28 × 81,189.24
  4. Step 4: Simplify right side
    153,399.90x = 18,646,511,916.07
  5. Step 5: Solve for x
    x = 18,646,511,916.07/153,399.90
  6. Step 6: Final answer
    x = 121,554.92

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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.