Home / 121,749.37-182,665.07-76,718.44

Finding the Fourth Proportional to 121,749.37, 182,665.07 and 76,718.44

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Solution

The fourth proportional to 121,749.37, 182,665.07 and 76,718.44 is: 115,103.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,749.37 : 182,665.07 = 76,718.44 : x
  2. Step 2: Convert to fraction form
    121,749.37/182,665.07 = 76,718.44/x
  3. Step 3: Cross multiply
    121,749.37x = 182,665.07 × 76,718.44
  4. Step 4: Simplify right side
    121,749.37x = 14,013,778,317.83
  5. Step 5: Solve for x
    x = 14,013,778,317.83/121,749.37
  6. Step 6: Final answer
    x = 115,103.49

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1.5x scale

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.