Home / 120,487.14-180,792.68-57,378.83

Finding the Fourth Proportional to 120,487.14, 180,792.68 and 57,378.83

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Solution

The fourth proportional to 120,487.14, 180,792.68 and 57,378.83 is: 86,097.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,487.14 : 180,792.68 = 57,378.83 : x
  2. Step 2: Convert to fraction form
    120,487.14/180,792.68 = 57,378.83/x
  3. Step 3: Cross multiply
    120,487.14x = 180,792.68 × 57,378.83
  4. Step 4: Simplify right side
    120,487.14x = 10,373,671,260.11
  5. Step 5: Solve for x
    x = 10,373,671,260.11/120,487.14
  6. Step 6: Final answer
    x = 86,097.75

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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.