Home / 131,734.63-181,898.60-121,659.39

Finding the Fourth Proportional to 131,734.63, 181,898.60 and 121,659.39

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Solution

The fourth proportional to 131,734.63, 181,898.60 and 121,659.39 is: 167,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,734.63 : 181,898.60 = 121,659.39 : x
  2. Step 2: Convert to fraction form
    131,734.63/181,898.60 = 121,659.39/x
  3. Step 3: Cross multiply
    131,734.63x = 181,898.60 × 121,659.39
  4. Step 4: Simplify right side
    131,734.63x = 22,129,673,134.40
  5. Step 5: Solve for x
    x = 22,129,673,134.40/131,734.63
  6. Step 6: Final answer
    x = 167,986.76

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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.