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Finding the Fourth Proportional to 99,403.80, 137,164.77 and 67,208.46

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Solution

The fourth proportional to 99,403.80, 137,164.77 and 67,208.46 is: 92,739.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.80 : 137,164.77 = 67,208.46 : x
  2. Step 2: Convert to fraction form
    99,403.80/137,164.77 = 67,208.46/x
  3. Step 3: Cross multiply
    99,403.80x = 137,164.77 × 67,208.46
  4. Step 4: Simplify right side
    99,403.80x = 9,218,632,957.95
  5. Step 5: Solve for x
    x = 9,218,632,957.95/99,403.80
  6. Step 6: Final answer
    x = 92,739.24

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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.