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Finding the Fourth Proportional to 139,884.47, 209,888.73 and 73,308.79

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Solution

The fourth proportional to 139,884.47, 209,888.73 and 73,308.79 is: 109,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,884.47 : 209,888.73 = 73,308.79 : x
  2. Step 2: Convert to fraction form
    139,884.47/209,888.73 = 73,308.79/x
  3. Step 3: Cross multiply
    139,884.47x = 209,888.73 × 73,308.79
  4. Step 4: Simplify right side
    139,884.47x = 15,386,688,306.21
  5. Step 5: Solve for x
    x = 15,386,688,306.21/139,884.47
  6. Step 6: Final answer
    x = 109,995.69

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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.