Home / 139,983.30-210,023.55-61,121.70

Finding the Fourth Proportional to 139,983.30, 210,023.55 and 61,121.70

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Solution

The fourth proportional to 139,983.30, 210,023.55 and 61,121.70 is: 91,703.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,983.30 : 210,023.55 = 61,121.70 : x
  2. Step 2: Convert to fraction form
    139,983.30/210,023.55 = 61,121.70/x
  3. Step 3: Cross multiply
    139,983.30x = 210,023.55 × 61,121.70
  4. Step 4: Simplify right side
    139,983.30x = 12,836,996,416.04
  5. Step 5: Solve for x
    x = 12,836,996,416.04/139,983.30
  6. Step 6: Final answer
    x = 91,703.77

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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.