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Finding the Fourth Proportional to 159,725.10, 239,384.11 and 84,881.10

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Solution

The fourth proportional to 159,725.10, 239,384.11 and 84,881.10 is: 127,213.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,725.10 : 239,384.11 = 84,881.10 : x
  2. Step 2: Convert to fraction form
    159,725.10/239,384.11 = 84,881.10/x
  3. Step 3: Cross multiply
    159,725.10x = 239,384.11 × 84,881.10
  4. Step 4: Simplify right side
    159,725.10x = 20,319,186,579.32
  5. Step 5: Solve for x
    x = 20,319,186,579.32/159,725.10
  6. Step 6: Final answer
    x = 127,213.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.