Home / 139,031.16-208,557.68-54,785.49

Finding the Fourth Proportional to 139,031.16, 208,557.68 and 54,785.49

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Solution

The fourth proportional to 139,031.16, 208,557.68 and 54,785.49 is: 82,182.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,031.16 : 208,557.68 = 54,785.49 : x
  2. Step 2: Convert to fraction form
    139,031.16/208,557.68 = 54,785.49/x
  3. Step 3: Cross multiply
    139,031.16x = 208,557.68 × 54,785.49
  4. Step 4: Simplify right side
    139,031.16x = 11,425,934,418.14
  5. Step 5: Solve for x
    x = 11,425,934,418.14/139,031.16
  6. Step 6: Final answer
    x = 82,182.54

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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.