Home / 196,622.96-271,129.56-129,438.32

Finding the Fourth Proportional to 196,622.96, 271,129.56 and 129,438.32

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Solution

The fourth proportional to 196,622.96, 271,129.56 and 129,438.32 is: 178,486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,622.96 : 271,129.56 = 129,438.32 : x
  2. Step 2: Convert to fraction form
    196,622.96/271,129.56 = 129,438.32/x
  3. Step 3: Cross multiply
    196,622.96x = 271,129.56 × 129,438.32
  4. Step 4: Simplify right side
    196,622.96x = 35,094,554,748.74
  5. Step 5: Solve for x
    x = 35,094,554,748.74/196,622.96
  6. Step 6: Final answer
    x = 178,486.55

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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.