Home / 106,423.14-146,790.09-86,280.78

Finding the Fourth Proportional to 106,423.14, 146,790.09 and 86,280.78

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Solution

The fourth proportional to 106,423.14, 146,790.09 and 86,280.78 is: 119,007.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,423.14 : 146,790.09 = 86,280.78 : x
  2. Step 2: Convert to fraction form
    106,423.14/146,790.09 = 86,280.78/x
  3. Step 3: Cross multiply
    106,423.14x = 146,790.09 × 86,280.78
  4. Step 4: Simplify right side
    106,423.14x = 12,665,163,461.47
  5. Step 5: Solve for x
    x = 12,665,163,461.47/106,423.14
  6. Step 6: Final answer
    x = 119,007.61

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1.5x scale

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.