Home / 121,749.40-182,528.52-77,367.88

Finding the Fourth Proportional to 121,749.40, 182,528.52 and 77,367.88

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Solution

The fourth proportional to 121,749.40, 182,528.52 and 77,367.88 is: 115,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,749.40 : 182,528.52 = 77,367.88 : x
  2. Step 2: Convert to fraction form
    121,749.40/182,528.52 = 77,367.88/x
  3. Step 3: Cross multiply
    121,749.40x = 182,528.52 × 77,367.88
  4. Step 4: Simplify right side
    121,749.40x = 14,121,844,631.94
  5. Step 5: Solve for x
    x = 14,121,844,631.94/121,749.40
  6. Step 6: Final answer
    x = 115,991.08

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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.