Home / 149,210.10-205,905.78-81,228.42

Finding the Fourth Proportional to 149,210.10, 205,905.78 and 81,228.42

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Solution

The fourth proportional to 149,210.10, 205,905.78 and 81,228.42 is: 112,092.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,210.10 : 205,905.78 = 81,228.42 : x
  2. Step 2: Convert to fraction form
    149,210.10/205,905.78 = 81,228.42/x
  3. Step 3: Cross multiply
    149,210.10x = 205,905.78 × 81,228.42
  4. Step 4: Simplify right side
    149,210.10x = 16,725,401,178.27
  5. Step 5: Solve for x
    x = 16,725,401,178.27/149,210.10
  6. Step 6: Final answer
    x = 112,092.96

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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.