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Finding the Fourth Proportional to 145,787.87, 217,883.01 and 106,427.87

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Solution

The fourth proportional to 145,787.87, 217,883.01 and 106,427.87 is: 159,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,787.87 : 217,883.01 = 106,427.87 : x
  2. Step 2: Convert to fraction form
    145,787.87/217,883.01 = 106,427.87/x
  3. Step 3: Cross multiply
    145,787.87x = 217,883.01 × 106,427.87
  4. Step 4: Simplify right side
    145,787.87x = 23,188,823,574.07
  5. Step 5: Solve for x
    x = 23,188,823,574.07/145,787.87
  6. Step 6: Final answer
    x = 159,058.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.