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Finding the Fourth Proportional to 140,820.68, 211,240.74 and 40,981.70

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Solution

The fourth proportional to 140,820.68, 211,240.74 and 40,981.70 is: 61,475.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,820.68 : 211,240.74 = 40,981.70 : x
  2. Step 2: Convert to fraction form
    140,820.68/211,240.74 = 40,981.70/x
  3. Step 3: Cross multiply
    140,820.68x = 211,240.74 × 40,981.70
  4. Step 4: Simplify right side
    140,820.68x = 8,657,004,634.46
  5. Step 5: Solve for x
    x = 8,657,004,634.46/140,820.68
  6. Step 6: Final answer
    x = 61,475.38

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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.