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Finding the Fourth Proportional to 121,264.64, 181,895.68 and 47,392

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Solution

The fourth proportional to 121,264.64, 181,895.68 and 47,392 is: 71,087.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,264.64 : 181,895.68 = 47,392 : x
  2. Step 2: Convert to fraction form
    121,264.64/181,895.68 = 47,392/x
  3. Step 3: Cross multiply
    121,264.64x = 181,895.68 × 47,392
  4. Step 4: Simplify right side
    121,264.64x = 8,620,400,066.56
  5. Step 5: Solve for x
    x = 8,620,400,066.56/121,264.64
  6. Step 6: Final answer
    x = 71,087.50

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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.