Home / 120,289.78-180,315.60-56,998

Finding the Fourth Proportional to 120,289.78, 180,315.60 and 56,998

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Solution

The fourth proportional to 120,289.78, 180,315.60 and 56,998 is: 85,440.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,289.78 : 180,315.60 = 56,998 : x
  2. Step 2: Convert to fraction form
    120,289.78/180,315.60 = 56,998/x
  3. Step 3: Cross multiply
    120,289.78x = 180,315.60 × 56,998
  4. Step 4: Simplify right side
    120,289.78x = 10,277,628,568.80
  5. Step 5: Solve for x
    x = 10,277,628,568.80/120,289.78
  6. Step 6: Final answer
    x = 85,440.58

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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.