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Finding the Fourth Proportional to 140,044.71, 210,042.12 and 55,797.81

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Solution

The fourth proportional to 140,044.71, 210,042.12 and 55,797.81 is: 83,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,044.71 : 210,042.12 = 55,797.81 : x
  2. Step 2: Convert to fraction form
    140,044.71/210,042.12 = 55,797.81/x
  3. Step 3: Cross multiply
    140,044.71x = 210,042.12 × 55,797.81
  4. Step 4: Simplify right side
    140,044.71x = 11,719,890,303.76
  5. Step 5: Solve for x
    x = 11,719,890,303.76/140,044.71
  6. Step 6: Final answer
    x = 83,686.78

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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.