Home / 149,165.24-205,812.10-87,913.87

Finding the Fourth Proportional to 149,165.24, 205,812.10 and 87,913.87

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Solution

The fourth proportional to 149,165.24, 205,812.10 and 87,913.87 is: 121,299.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,165.24 : 205,812.10 = 87,913.87 : x
  2. Step 2: Convert to fraction form
    149,165.24/205,812.10 = 87,913.87/x
  3. Step 3: Cross multiply
    149,165.24x = 205,812.10 × 87,913.87
  4. Step 4: Simplify right side
    149,165.24x = 18,093,737,799.19
  5. Step 5: Solve for x
    x = 18,093,737,799.19/149,165.24
  6. Step 6: Final answer
    x = 121,299.97

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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.