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Finding the Fourth Proportional to 211,663.80, 292,086.90 and 116,172.12

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Solution

The fourth proportional to 211,663.80, 292,086.90 and 116,172.12 is: 160,312.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,663.80 : 292,086.90 = 116,172.12 : x
  2. Step 2: Convert to fraction form
    211,663.80/292,086.90 = 116,172.12/x
  3. Step 3: Cross multiply
    211,663.80x = 292,086.90 × 116,172.12
  4. Step 4: Simplify right side
    211,663.80x = 33,932,354,397.23
  5. Step 5: Solve for x
    x = 33,932,354,397.23/211,663.80
  6. Step 6: Final answer
    x = 160,312.51

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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.