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Finding the Fourth Proportional to 99,148.35, 148,574.86 and 54,787.79

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Solution

The fourth proportional to 99,148.35, 148,574.86 and 54,787.79 is: 82,100.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,148.35 : 148,574.86 = 54,787.79 : x
  2. Step 2: Convert to fraction form
    99,148.35/148,574.86 = 54,787.79/x
  3. Step 3: Cross multiply
    99,148.35x = 148,574.86 × 54,787.79
  4. Step 4: Simplify right side
    99,148.35x = 8,140,088,463.43
  5. Step 5: Solve for x
    x = 8,140,088,463.43/99,148.35
  6. Step 6: Final answer
    x = 82,100.09

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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.