Home / 139,836.88-209,639.20-55,545.04

Finding the Fourth Proportional to 139,836.88, 209,639.20 and 55,545.04

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Solution

The fourth proportional to 139,836.88, 209,639.20 and 55,545.04 is: 83,271.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,836.88 : 209,639.20 = 55,545.04 : x
  2. Step 2: Convert to fraction form
    139,836.88/209,639.20 = 55,545.04/x
  3. Step 3: Cross multiply
    139,836.88x = 209,639.20 × 55,545.04
  4. Step 4: Simplify right side
    139,836.88x = 11,644,417,749.57
  5. Step 5: Solve for x
    x = 11,644,417,749.57/139,836.88
  6. Step 6: Final answer
    x = 83,271.44

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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.