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Finding the Fourth Proportional to 243,497.09, 336,019.55 and 136,068.01

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Solution

The fourth proportional to 243,497.09, 336,019.55 and 136,068.01 is: 187,770.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,497.09 : 336,019.55 = 136,068.01 : x
  2. Step 2: Convert to fraction form
    243,497.09/336,019.55 = 136,068.01/x
  3. Step 3: Cross multiply
    243,497.09x = 336,019.55 × 136,068.01
  4. Step 4: Simplify right side
    243,497.09x = 45,721,511,489.60
  5. Step 5: Solve for x
    x = 45,721,511,489.60/243,497.09
  6. Step 6: Final answer
    x = 187,770.26

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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.