Home / 123,759.78-185,307.07-78,536.29

Finding the Fourth Proportional to 123,759.78, 185,307.07 and 78,536.29

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Solution

The fourth proportional to 123,759.78, 185,307.07 and 78,536.29 is: 117,593.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,759.78 : 185,307.07 = 78,536.29 : x
  2. Step 2: Convert to fraction form
    123,759.78/185,307.07 = 78,536.29/x
  3. Step 3: Cross multiply
    123,759.78x = 185,307.07 × 78,536.29
  4. Step 4: Simplify right side
    123,759.78x = 14,553,329,788.57
  5. Step 5: Solve for x
    x = 14,553,329,788.57/123,759.78
  6. Step 6: Final answer
    x = 117,593.37

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1.5x scale

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.