Home / 121,682.52-182,141.40-77,359.32

Finding the Fourth Proportional to 121,682.52, 182,141.40 and 77,359.32

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Solution

The fourth proportional to 121,682.52, 182,141.40 and 77,359.32 is: 115,795.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,682.52 : 182,141.40 = 77,359.32 : x
  2. Step 2: Convert to fraction form
    121,682.52/182,141.40 = 77,359.32/x
  3. Step 3: Cross multiply
    121,682.52x = 182,141.40 × 77,359.32
  4. Step 4: Simplify right side
    121,682.52x = 14,090,334,847.85
  5. Step 5: Solve for x
    x = 14,090,334,847.85/121,682.52
  6. Step 6: Final answer
    x = 115,795.88

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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.