Home / 112,071.60-168,107.40-85,499.55

Finding the Fourth Proportional to 112,071.60, 168,107.40 and 85,499.55

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Solution

The fourth proportional to 112,071.60, 168,107.40 and 85,499.55 is: 128,249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,071.60 : 168,107.40 = 85,499.55 : x
  2. Step 2: Convert to fraction form
    112,071.60/168,107.40 = 85,499.55/x
  3. Step 3: Cross multiply
    112,071.60x = 168,107.40 × 85,499.55
  4. Step 4: Simplify right side
    112,071.60x = 14,373,107,051.67
  5. Step 5: Solve for x
    x = 14,373,107,051.67/112,071.60
  6. Step 6: Final answer
    x = 128,249.33

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Similar ratio
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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.