Home / 120,974.40-181,461.60-76,651.20

Finding the Fourth Proportional to 120,974.40, 181,461.60 and 76,651.20

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Solution

The fourth proportional to 120,974.40, 181,461.60 and 76,651.20 is: 114,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,974.40 : 181,461.60 = 76,651.20 : x
  2. Step 2: Convert to fraction form
    120,974.40/181,461.60 = 76,651.20/x
  3. Step 3: Cross multiply
    120,974.40x = 181,461.60 × 76,651.20
  4. Step 4: Simplify right side
    120,974.40x = 13,909,249,393.92
  5. Step 5: Solve for x
    x = 13,909,249,393.92/120,974.40
  6. Step 6: Final answer
    x = 114,976.80

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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.