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Finding the Fourth Proportional to 121,703.52, 182,111.22 and 71,807.52

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Solution

The fourth proportional to 121,703.52, 182,111.22 and 71,807.52 is: 107,449.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,703.52 : 182,111.22 = 71,807.52 : x
  2. Step 2: Convert to fraction form
    121,703.52/182,111.22 = 71,807.52/x
  3. Step 3: Cross multiply
    121,703.52x = 182,111.22 × 71,807.52
  4. Step 4: Simplify right side
    121,703.52x = 13,076,955,072.37
  5. Step 5: Solve for x
    x = 13,076,955,072.37/121,703.52
  6. Step 6: Final answer
    x = 107,449.28

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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.