Home / 106,486.10-146,998.05-68,778.74

Finding the Fourth Proportional to 106,486.10, 146,998.05 and 68,778.74

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Solution

The fourth proportional to 106,486.10, 146,998.05 and 68,778.74 is: 94,945.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,486.10 : 146,998.05 = 68,778.74 : x
  2. Step 2: Convert to fraction form
    106,486.10/146,998.05 = 68,778.74/x
  3. Step 3: Cross multiply
    106,486.10x = 146,998.05 × 68,778.74
  4. Step 4: Simplify right side
    106,486.10x = 10,110,340,661.46
  5. Step 5: Solve for x
    x = 10,110,340,661.46/106,486.10
  6. Step 6: Final answer
    x = 94,945.17

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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.