Home / 120,631.68-180,977.90-70,753.50

Finding the Fourth Proportional to 120,631.68, 180,977.90 and 70,753.50

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Solution

The fourth proportional to 120,631.68, 180,977.90 and 70,753.50 is: 106,148.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,631.68 : 180,977.90 = 70,753.50 : x
  2. Step 2: Convert to fraction form
    120,631.68/180,977.90 = 70,753.50/x
  3. Step 3: Cross multiply
    120,631.68x = 180,977.90 × 70,753.50
  4. Step 4: Simplify right side
    120,631.68x = 12,804,819,493.88
  5. Step 5: Solve for x
    x = 12,804,819,493.88/120,631.68
  6. Step 6: Final answer
    x = 106,148.07

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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.