Home / 123,788.63-170,830.38-67,200

Finding the Fourth Proportional to 123,788.63, 170,830.38 and 67,200

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Solution

The fourth proportional to 123,788.63, 170,830.38 and 67,200 is: 92,737.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,788.63 : 170,830.38 = 67,200 : x
  2. Step 2: Convert to fraction form
    123,788.63/170,830.38 = 67,200/x
  3. Step 3: Cross multiply
    123,788.63x = 170,830.38 × 67,200
  4. Step 4: Simplify right side
    123,788.63x = 11,479,801,536
  5. Step 5: Solve for x
    x = 11,479,801,536/123,788.63
  6. Step 6: Final answer
    x = 92,737.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.