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Finding the Fourth Proportional to 139,915.23, 209,811.08 and 40,052.76

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Solution

The fourth proportional to 139,915.23, 209,811.08 and 40,052.76 is: 60,061.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,915.23 : 209,811.08 = 40,052.76 : x
  2. Step 2: Convert to fraction form
    139,915.23/209,811.08 = 40,052.76/x
  3. Step 3: Cross multiply
    139,915.23x = 209,811.08 × 40,052.76
  4. Step 4: Simplify right side
    139,915.23x = 8,403,512,632.32
  5. Step 5: Solve for x
    x = 8,403,512,632.32/139,915.23
  6. Step 6: Final answer
    x = 60,061.46

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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.