Home / 112,489.20-168,733.80-45,885.60

Finding the Fourth Proportional to 112,489.20, 168,733.80 and 45,885.60

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Solution

The fourth proportional to 112,489.20, 168,733.80 and 45,885.60 is: 68,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,489.20 : 168,733.80 = 45,885.60 : x
  2. Step 2: Convert to fraction form
    112,489.20/168,733.80 = 45,885.60/x
  3. Step 3: Cross multiply
    112,489.20x = 168,733.80 × 45,885.60
  4. Step 4: Simplify right side
    112,489.20x = 7,742,451,653.28
  5. Step 5: Solve for x
    x = 7,742,451,653.28/112,489.20
  6. Step 6: Final answer
    x = 68,828.40

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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.