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Finding the Fourth Proportional to 140,073, 210,111.36 and 46,578.78

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Solution

The fourth proportional to 140,073, 210,111.36 and 46,578.78 is: 69,868.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,073 : 210,111.36 = 46,578.78 : x
  2. Step 2: Convert to fraction form
    140,073/210,111.36 = 46,578.78/x
  3. Step 3: Cross multiply
    140,073x = 210,111.36 × 46,578.78
  4. Step 4: Simplify right side
    140,073x = 9,786,730,812.94
  5. Step 5: Solve for x
    x = 9,786,730,812.94/140,073
  6. Step 6: Final answer
    x = 69,868.79

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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.