Home / 120,750.24-166,533-77,737.20

Finding the Fourth Proportional to 120,750.24, 166,533 and 77,737.20

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Solution

The fourth proportional to 120,750.24, 166,533 and 77,737.20 is: 107,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,750.24 : 166,533 = 77,737.20 : x
  2. Step 2: Convert to fraction form
    120,750.24/166,533 = 77,737.20/x
  3. Step 3: Cross multiply
    120,750.24x = 166,533 × 77,737.20
  4. Step 4: Simplify right side
    120,750.24x = 12,945,809,127.60
  5. Step 5: Solve for x
    x = 12,945,809,127.60/120,750.24
  6. Step 6: Final answer
    x = 107,211.46

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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.