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Finding the Fourth Proportional to 153,670.54, 212,067.96 and 84,767.91

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Solution

The fourth proportional to 153,670.54, 212,067.96 and 84,767.91 is: 116,981.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,670.54 : 212,067.96 = 84,767.91 : x
  2. Step 2: Convert to fraction form
    153,670.54/212,067.96 = 84,767.91/x
  3. Step 3: Cross multiply
    153,670.54x = 212,067.96 × 84,767.91
  4. Step 4: Simplify right side
    153,670.54x = 17,976,557,747.16
  5. Step 5: Solve for x
    x = 17,976,557,747.16/153,670.54
  6. Step 6: Final answer
    x = 116,981.16

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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.