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Finding the Fourth Proportional to 140,356.45, 210,594.99 and 45,615.67

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Solution

The fourth proportional to 140,356.45, 210,594.99 and 45,615.67 is: 68,443.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,356.45 : 210,594.99 = 45,615.67 : x
  2. Step 2: Convert to fraction form
    140,356.45/210,594.99 = 45,615.67/x
  3. Step 3: Cross multiply
    140,356.45x = 210,594.99 × 45,615.67
  4. Step 4: Simplify right side
    140,356.45x = 9,606,431,567.49
  5. Step 5: Solve for x
    x = 9,606,431,567.49/140,356.45
  6. Step 6: Final answer
    x = 68,443.11

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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.