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Finding the Fourth Proportional to 243,492.81, 336,013.62 and 136,063.72

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Solution

The fourth proportional to 243,492.81, 336,013.62 and 136,063.72 is: 187,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,492.81 : 336,013.62 = 136,063.72 : x
  2. Step 2: Convert to fraction form
    243,492.81/336,013.62 = 136,063.72/x
  3. Step 3: Cross multiply
    243,492.81x = 336,013.62 × 136,063.72
  4. Step 4: Simplify right side
    243,492.81x = 45,719,263,107.87
  5. Step 5: Solve for x
    x = 45,719,263,107.87/243,492.81
  6. Step 6: Final answer
    x = 187,764.32

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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.