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Finding the Fourth Proportional to 187,267.76, 280,929.62 and 68,930.11

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Solution

The fourth proportional to 187,267.76, 280,929.62 and 68,930.11 is: 103,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,267.76 : 280,929.62 = 68,930.11 : x
  2. Step 2: Convert to fraction form
    187,267.76/280,929.62 = 68,930.11/x
  3. Step 3: Cross multiply
    187,267.76x = 280,929.62 × 68,930.11
  4. Step 4: Simplify right side
    187,267.76x = 19,364,508,164.38
  5. Step 5: Solve for x
    x = 19,364,508,164.38/187,267.76
  6. Step 6: Final answer
    x = 103,405.45

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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.