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Finding the Fourth Proportional to 196,969.92, 272,044.80 and 143,494.08

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Solution

The fourth proportional to 196,969.92, 272,044.80 and 143,494.08 is: 198,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,969.92 : 272,044.80 = 143,494.08 : x
  2. Step 2: Convert to fraction form
    196,969.92/272,044.80 = 143,494.08/x
  3. Step 3: Cross multiply
    196,969.92x = 272,044.80 × 143,494.08
  4. Step 4: Simplify right side
    196,969.92x = 39,036,818,294.78
  5. Step 5: Solve for x
    x = 39,036,818,294.78/196,969.92
  6. Step 6: Final answer
    x = 198,186.70

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1.5x scale

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.