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Finding the Fourth Proportional to 139,882.70, 209,886.07 and 73,307

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Solution

The fourth proportional to 139,882.70, 209,886.07 and 73,307 is: 109,993.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,882.70 : 209,886.07 = 73,307 : x
  2. Step 2: Convert to fraction form
    139,882.70/209,886.07 = 73,307/x
  3. Step 3: Cross multiply
    139,882.70x = 209,886.07 × 73,307
  4. Step 4: Simplify right side
    139,882.70x = 15,386,118,133.49
  5. Step 5: Solve for x
    x = 15,386,118,133.49/139,882.70
  6. Step 6: Final answer
    x = 109,993.00

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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.