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Finding the Fourth Proportional to 191,285.20, 286,927.80 and 102,711.70

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Solution

The fourth proportional to 191,285.20, 286,927.80 and 102,711.70 is: 154,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,285.20 : 286,927.80 = 102,711.70 : x
  2. Step 2: Convert to fraction form
    191,285.20/286,927.80 = 102,711.70/x
  3. Step 3: Cross multiply
    191,285.20x = 286,927.80 × 102,711.70
  4. Step 4: Simplify right side
    191,285.20x = 29,470,842,115.26
  5. Step 5: Solve for x
    x = 29,470,842,115.26/191,285.20
  6. Step 6: Final answer
    x = 154,067.55

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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.