Home / 196,531.29-271,129.14-128,430.06

Finding the Fourth Proportional to 196,531.29, 271,129.14 and 128,430.06

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Solution

The fourth proportional to 196,531.29, 271,129.14 and 128,430.06 is: 177,178.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,531.29 : 271,129.14 = 128,430.06 : x
  2. Step 2: Convert to fraction form
    196,531.29/271,129.14 = 128,430.06/x
  3. Step 3: Cross multiply
    196,531.29x = 271,129.14 × 128,430.06
  4. Step 4: Simplify right side
    196,531.29x = 34,821,131,717.95
  5. Step 5: Solve for x
    x = 34,821,131,717.95/196,531.29
  6. Step 6: Final answer
    x = 177,178.56

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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.