Home / 122,946.20-183,981.90-85,329.80

Finding the Fourth Proportional to 122,946.20, 183,981.90 and 85,329.80

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Solution

The fourth proportional to 122,946.20, 183,981.90 and 85,329.80 is: 127,691.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,946.20 : 183,981.90 = 85,329.80 : x
  2. Step 2: Convert to fraction form
    122,946.20/183,981.90 = 85,329.80/x
  3. Step 3: Cross multiply
    122,946.20x = 183,981.90 × 85,329.80
  4. Step 4: Simplify right side
    122,946.20x = 15,699,138,730.62
  5. Step 5: Solve for x
    x = 15,699,138,730.62/122,946.20
  6. Step 6: Final answer
    x = 127,691.13

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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.