Home / 112,069.12-154,670.16-71,789.44

Finding the Fourth Proportional to 112,069.12, 154,670.16 and 71,789.44

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Solution

The fourth proportional to 112,069.12, 154,670.16 and 71,789.44 is: 99,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,069.12 : 154,670.16 = 71,789.44 : x
  2. Step 2: Convert to fraction form
    112,069.12/154,670.16 = 71,789.44/x
  3. Step 3: Cross multiply
    112,069.12x = 154,670.16 × 71,789.44
  4. Step 4: Simplify right side
    112,069.12x = 11,103,684,171.11
  5. Step 5: Solve for x
    x = 11,103,684,171.11/112,069.12
  6. Step 6: Final answer
    x = 99,078.89

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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.