Home / 149,454.50-206,243.08-81,472.80

Finding the Fourth Proportional to 149,454.50, 206,243.08 and 81,472.80

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Solution

The fourth proportional to 149,454.50, 206,243.08 and 81,472.80 is: 112,430.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,454.50 : 206,243.08 = 81,472.80 : x
  2. Step 2: Convert to fraction form
    149,454.50/206,243.08 = 81,472.80/x
  3. Step 3: Cross multiply
    149,454.50x = 206,243.08 × 81,472.80
  4. Step 4: Simplify right side
    149,454.50x = 16,803,201,208.22
  5. Step 5: Solve for x
    x = 16,803,201,208.22/149,454.50
  6. Step 6: Final answer
    x = 112,430.21

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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.