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Finding the Fourth Proportional to 140,073.02, 210,122.34 and 55,812.74

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Solution

The fourth proportional to 140,073.02, 210,122.34 and 55,812.74 is: 83,724.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,073.02 : 210,122.34 = 55,812.74 : x
  2. Step 2: Convert to fraction form
    140,073.02/210,122.34 = 55,812.74/x
  3. Step 3: Cross multiply
    140,073.02x = 210,122.34 × 55,812.74
  4. Step 4: Simplify right side
    140,073.02x = 11,727,503,530.61
  5. Step 5: Solve for x
    x = 11,727,503,530.61/140,073.02
  6. Step 6: Final answer
    x = 83,724.21

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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.