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Finding the Fourth Proportional to 104,967.56, 144,906.95 and 72,726.63

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Solution

The fourth proportional to 104,967.56, 144,906.95 and 72,726.63 is: 100,398.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,967.56 : 144,906.95 = 72,726.63 : x
  2. Step 2: Convert to fraction form
    104,967.56/144,906.95 = 72,726.63/x
  3. Step 3: Cross multiply
    104,967.56x = 144,906.95 × 72,726.63
  4. Step 4: Simplify right side
    104,967.56x = 10,538,593,570.95
  5. Step 5: Solve for x
    x = 10,538,593,570.95/104,967.56
  6. Step 6: Final answer
    x = 100,398.57

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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.