Home / 120,739.68-180,770.40-98,115.84

Finding the Fourth Proportional to 120,739.68, 180,770.40 and 98,115.84

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Solution

The fourth proportional to 120,739.68, 180,770.40 and 98,115.84 is: 146,898.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,739.68 : 180,770.40 = 98,115.84 : x
  2. Step 2: Convert to fraction form
    120,739.68/180,770.40 = 98,115.84/x
  3. Step 3: Cross multiply
    120,739.68x = 180,770.40 × 98,115.84
  4. Step 4: Simplify right side
    120,739.68x = 17,736,439,643.14
  5. Step 5: Solve for x
    x = 17,736,439,643.14/120,739.68
  6. Step 6: Final answer
    x = 146,898.18

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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.