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Finding the Fourth Proportional to 140,042.98, 210,009.66 and 61,103.62

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Solution

The fourth proportional to 140,042.98, 210,009.66 and 61,103.62 is: 91,631.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,042.98 : 210,009.66 = 61,103.62 : x
  2. Step 2: Convert to fraction form
    140,042.98/210,009.66 = 61,103.62/x
  3. Step 3: Cross multiply
    140,042.98x = 210,009.66 × 61,103.62
  4. Step 4: Simplify right side
    140,042.98x = 12,832,350,460.97
  5. Step 5: Solve for x
    x = 12,832,350,460.97/140,042.98
  6. Step 6: Final answer
    x = 91,631.52

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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.