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Finding the Fourth Proportional to 163,755.80, 245,633.70 and 80,632.60

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Solution

The fourth proportional to 163,755.80, 245,633.70 and 80,632.60 is: 120,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,755.80 : 245,633.70 = 80,632.60 : x
  2. Step 2: Convert to fraction form
    163,755.80/245,633.70 = 80,632.60/x
  3. Step 3: Cross multiply
    163,755.80x = 245,633.70 × 80,632.60
  4. Step 4: Simplify right side
    163,755.80x = 19,806,083,878.62
  5. Step 5: Solve for x
    x = 19,806,083,878.62/163,755.80
  6. Step 6: Final answer
    x = 120,948.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.