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Finding the Fourth Proportional to 243,495.16, 336,036.30 and 136,067.80

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Solution

The fourth proportional to 243,495.16, 336,036.30 and 136,067.80 is: 187,780.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,495.16 : 336,036.30 = 136,067.80 : x
  2. Step 2: Convert to fraction form
    243,495.16/336,036.30 = 136,067.80/x
  3. Step 3: Cross multiply
    243,495.16x = 336,036.30 × 136,067.80
  4. Step 4: Simplify right side
    243,495.16x = 45,723,720,061.14
  5. Step 5: Solve for x
    x = 45,723,720,061.14/243,495.16
  6. Step 6: Final answer
    x = 187,780.82

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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.