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Finding the Fourth Proportional to 134,593.84, 185,728.71 and 78,008.86

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Solution

The fourth proportional to 134,593.84, 185,728.71 and 78,008.86 is: 107,645.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,593.84 : 185,728.71 = 78,008.86 : x
  2. Step 2: Convert to fraction form
    134,593.84/185,728.71 = 78,008.86/x
  3. Step 3: Cross multiply
    134,593.84x = 185,728.71 × 78,008.86
  4. Step 4: Simplify right side
    134,593.84x = 14,488,484,936.37
  5. Step 5: Solve for x
    x = 14,488,484,936.37/134,593.84
  6. Step 6: Final answer
    x = 107,645.97

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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.