Home / 109,658.37-151,320.09-61,916.43

Finding the Fourth Proportional to 109,658.37, 151,320.09 and 61,916.43

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Solution

The fourth proportional to 109,658.37, 151,320.09 and 61,916.43 is: 85,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,658.37 : 151,320.09 = 61,916.43 : x
  2. Step 2: Convert to fraction form
    109,658.37/151,320.09 = 61,916.43/x
  3. Step 3: Cross multiply
    109,658.37x = 151,320.09 × 61,916.43
  4. Step 4: Simplify right side
    109,658.37x = 9,369,199,760.08
  5. Step 5: Solve for x
    x = 9,369,199,760.08/109,658.37
  6. Step 6: Final answer
    x = 85,439.90

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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.