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Finding the Fourth Proportional to 135,473.65, 186,951.51 and 74,219.36

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Solution

The fourth proportional to 135,473.65, 186,951.51 and 74,219.36 is: 102,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,473.65 : 186,951.51 = 74,219.36 : x
  2. Step 2: Convert to fraction form
    135,473.65/186,951.51 = 74,219.36/x
  3. Step 3: Cross multiply
    135,473.65x = 186,951.51 × 74,219.36
  4. Step 4: Simplify right side
    135,473.65x = 13,875,420,488.48
  5. Step 5: Solve for x
    x = 13,875,420,488.48/135,473.65
  6. Step 6: Final answer
    x = 102,421.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.