Home / 120,707.83-166,501.02-77,743

Finding the Fourth Proportional to 120,707.83, 166,501.02 and 77,743

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Solution

The fourth proportional to 120,707.83, 166,501.02 and 77,743 is: 107,236.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,707.83 : 166,501.02 = 77,743 : x
  2. Step 2: Convert to fraction form
    120,707.83/166,501.02 = 77,743/x
  3. Step 3: Cross multiply
    120,707.83x = 166,501.02 × 77,743
  4. Step 4: Simplify right side
    120,707.83x = 12,944,288,797.86
  5. Step 5: Solve for x
    x = 12,944,288,797.86/120,707.83
  6. Step 6: Final answer
    x = 107,236.53

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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.