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Finding the Fourth Proportional to 124,574.49, 171,912.78 and 70,869.87

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Solution

The fourth proportional to 124,574.49, 171,912.78 and 70,869.87 is: 97,800.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,574.49 : 171,912.78 = 70,869.87 : x
  2. Step 2: Convert to fraction form
    124,574.49/171,912.78 = 70,869.87/x
  3. Step 3: Cross multiply
    124,574.49x = 171,912.78 × 70,869.87
  4. Step 4: Simplify right side
    124,574.49x = 12,183,436,369.94
  5. Step 5: Solve for x
    x = 12,183,436,369.94/124,574.49
  6. Step 6: Final answer
    x = 97,800.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.