Home / 144,767.12-217,116.36-81,615.20

Finding the Fourth Proportional to 144,767.12, 217,116.36 and 81,615.20

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Solution

The fourth proportional to 144,767.12, 217,116.36 and 81,615.20 is: 122,403.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,767.12 : 217,116.36 = 81,615.20 : x
  2. Step 2: Convert to fraction form
    144,767.12/217,116.36 = 81,615.20/x
  3. Step 3: Cross multiply
    144,767.12x = 217,116.36 × 81,615.20
  4. Step 4: Simplify right side
    144,767.12x = 17,719,995,144.67
  5. Step 5: Solve for x
    x = 17,719,995,144.67/144,767.12
  6. Step 6: Final answer
    x = 122,403.45

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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.