Home / 120,977.40-181,466.10-76,654.20

Finding the Fourth Proportional to 120,977.40, 181,466.10 and 76,654.20

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Solution

The fourth proportional to 120,977.40, 181,466.10 and 76,654.20 is: 114,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,977.40 : 181,466.10 = 76,654.20 : x
  2. Step 2: Convert to fraction form
    120,977.40/181,466.10 = 76,654.20/x
  3. Step 3: Cross multiply
    120,977.40x = 181,466.10 × 76,654.20
  4. Step 4: Simplify right side
    120,977.40x = 13,910,138,722.62
  5. Step 5: Solve for x
    x = 13,910,138,722.62/120,977.40
  6. Step 6: Final answer
    x = 114,981.30

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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.