Home / 112,578.72-155,290.95-74,338.62

Finding the Fourth Proportional to 112,578.72, 155,290.95 and 74,338.62

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Solution

The fourth proportional to 112,578.72, 155,290.95 and 74,338.62 is: 102,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,578.72 : 155,290.95 = 74,338.62 : x
  2. Step 2: Convert to fraction form
    112,578.72/155,290.95 = 74,338.62/x
  3. Step 3: Cross multiply
    112,578.72x = 155,290.95 × 74,338.62
  4. Step 4: Simplify right side
    112,578.72x = 11,544,114,921.49
  5. Step 5: Solve for x
    x = 11,544,114,921.49/112,578.72
  6. Step 6: Final answer
    x = 102,542.60

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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.