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Finding the Fourth Proportional to 140,254.64, 193,543.50 and 79,839.98

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Solution

The fourth proportional to 140,254.64, 193,543.50 and 79,839.98 is: 110,174.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,254.64 : 193,543.50 = 79,839.98 : x
  2. Step 2: Convert to fraction form
    140,254.64/193,543.50 = 79,839.98/x
  3. Step 3: Cross multiply
    140,254.64x = 193,543.50 × 79,839.98
  4. Step 4: Simplify right side
    140,254.64x = 15,452,509,169.13
  5. Step 5: Solve for x
    x = 15,452,509,169.13/140,254.64
  6. Step 6: Final answer
    x = 110,174.67

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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.