Home / 194,916.80-292,375.20-128,388.80

Finding the Fourth Proportional to 194,916.80, 292,375.20 and 128,388.80

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Solution

The fourth proportional to 194,916.80, 292,375.20 and 128,388.80 is: 192,583.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,916.80 : 292,375.20 = 128,388.80 : x
  2. Step 2: Convert to fraction form
    194,916.80/292,375.20 = 128,388.80/x
  3. Step 3: Cross multiply
    194,916.80x = 292,375.20 × 128,388.80
  4. Step 4: Simplify right side
    194,916.80x = 37,537,701,077.76
  5. Step 5: Solve for x
    x = 37,537,701,077.76/194,916.80
  6. Step 6: Final answer
    x = 192,583.20

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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.