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Finding the Fourth Proportional to 185,088.78, 277,632.90 and 72,690.48

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Solution

The fourth proportional to 185,088.78, 277,632.90 and 72,690.48 is: 109,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,088.78 : 277,632.90 = 72,690.48 : x
  2. Step 2: Convert to fraction form
    185,088.78/277,632.90 = 72,690.48/x
  3. Step 3: Cross multiply
    185,088.78x = 277,632.90 × 72,690.48
  4. Step 4: Simplify right side
    185,088.78x = 20,181,268,764.79
  5. Step 5: Solve for x
    x = 20,181,268,764.79/185,088.78
  6. Step 6: Final answer
    x = 109,035.61

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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.