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Finding the Fourth Proportional to 139,970.52, 209,955.66 and 34,789.48

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Solution

The fourth proportional to 139,970.52, 209,955.66 and 34,789.48 is: 52,184.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,970.52 : 209,955.66 = 34,789.48 : x
  2. Step 2: Convert to fraction form
    139,970.52/209,955.66 = 34,789.48/x
  3. Step 3: Cross multiply
    139,970.52x = 209,955.66 × 34,789.48
  4. Step 4: Simplify right side
    139,970.52x = 7,304,248,234.46
  5. Step 5: Solve for x
    x = 7,304,248,234.46/139,970.52
  6. Step 6: Final answer
    x = 52,184.19

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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.