Home / 139,037.40-208,599.30-54,808.20

Finding the Fourth Proportional to 139,037.40, 208,599.30 and 54,808.20

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Solution

The fourth proportional to 139,037.40, 208,599.30 and 54,808.20 is: 82,229.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,037.40 : 208,599.30 = 54,808.20 : x
  2. Step 2: Convert to fraction form
    139,037.40/208,599.30 = 54,808.20/x
  3. Step 3: Cross multiply
    139,037.40x = 208,599.30 × 54,808.20
  4. Step 4: Simplify right side
    139,037.40x = 11,432,952,154.26
  5. Step 5: Solve for x
    x = 11,432,952,154.26/139,037.40
  6. Step 6: Final answer
    x = 82,229.33

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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.