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Finding the Fourth Proportional to 186,018.74, 278,864.38 and 73,777.76

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Solution

The fourth proportional to 186,018.74, 278,864.38 and 73,777.76 is: 110,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,018.74 : 278,864.38 = 73,777.76 : x
  2. Step 2: Convert to fraction form
    186,018.74/278,864.38 = 73,777.76/x
  3. Step 3: Cross multiply
    186,018.74x = 278,864.38 × 73,777.76
  4. Step 4: Simplify right side
    186,018.74x = 20,573,987,721.42
  5. Step 5: Solve for x
    x = 20,573,987,721.42/186,018.74
  6. Step 6: Final answer
    x = 110,601.70

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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.