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Finding the Fourth Proportional to 105,392.49, 145,489.08 and 67,203.23

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Solution

The fourth proportional to 105,392.49, 145,489.08 and 67,203.23 is: 92,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.49 : 145,489.08 = 67,203.23 : x
  2. Step 2: Convert to fraction form
    105,392.49/145,489.08 = 67,203.23/x
  3. Step 3: Cross multiply
    105,392.49x = 145,489.08 × 67,203.23
  4. Step 4: Simplify right side
    105,392.49x = 9,777,335,378.28
  5. Step 5: Solve for x
    x = 9,777,335,378.28/105,392.49
  6. Step 6: Final answer
    x = 92,770.70

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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.