Home / 106,939.07-147,612.81-61,635.12

Finding the Fourth Proportional to 106,939.07, 147,612.81 and 61,635.12

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Solution

The fourth proportional to 106,939.07, 147,612.81 and 61,635.12 is: 85,077.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,939.07 : 147,612.81 = 61,635.12 : x
  2. Step 2: Convert to fraction form
    106,939.07/147,612.81 = 61,635.12/x
  3. Step 3: Cross multiply
    106,939.07x = 147,612.81 × 61,635.12
  4. Step 4: Simplify right side
    106,939.07x = 9,098,133,257.89
  5. Step 5: Solve for x
    x = 9,098,133,257.89/106,939.07
  6. Step 6: Final answer
    x = 85,077.73

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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.