Home / 109,658.75-151,320.62-61,916.81

Finding the Fourth Proportional to 109,658.75, 151,320.62 and 61,916.81

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Solution

The fourth proportional to 109,658.75, 151,320.62 and 61,916.81 is: 85,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,658.75 : 151,320.62 = 61,916.81 : x
  2. Step 2: Convert to fraction form
    109,658.75/151,320.62 = 61,916.81/x
  3. Step 3: Cross multiply
    109,658.75x = 151,320.62 × 61,916.81
  4. Step 4: Simplify right side
    109,658.75x = 9,369,289,475.81
  5. Step 5: Solve for x
    x = 9,369,289,475.81/109,658.75
  6. Step 6: Final answer
    x = 85,440.42

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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.