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Finding the Fourth Proportional to 154,009.74, 230,879.65 and 74,007.87

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Solution

The fourth proportional to 154,009.74, 230,879.65 and 74,007.87 is: 110,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,009.74 : 230,879.65 = 74,007.87 : x
  2. Step 2: Convert to fraction form
    154,009.74/230,879.65 = 74,007.87/x
  3. Step 3: Cross multiply
    154,009.74x = 230,879.65 × 74,007.87
  4. Step 4: Simplify right side
    154,009.74x = 17,086,911,122.85
  5. Step 5: Solve for x
    x = 17,086,911,122.85/154,009.74
  6. Step 6: Final answer
    x = 110,946.95

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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.