Home / 122,542.20-183,813.30-52,428.60

Finding the Fourth Proportional to 122,542.20, 183,813.30 and 52,428.60

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Solution

The fourth proportional to 122,542.20, 183,813.30 and 52,428.60 is: 78,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,542.20 : 183,813.30 = 52,428.60 : x
  2. Step 2: Convert to fraction form
    122,542.20/183,813.30 = 52,428.60/x
  3. Step 3: Cross multiply
    122,542.20x = 183,813.30 × 52,428.60
  4. Step 4: Simplify right side
    122,542.20x = 9,637,073,980.38
  5. Step 5: Solve for x
    x = 9,637,073,980.38/122,542.20
  6. Step 6: Final answer
    x = 78,642.90

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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.