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Finding the Fourth Proportional to 139,213.44, 208,854.72 and 56,165.76

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Solution

The fourth proportional to 139,213.44, 208,854.72 and 56,165.76 is: 84,262.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,213.44 : 208,854.72 = 56,165.76 : x
  2. Step 2: Convert to fraction form
    139,213.44/208,854.72 = 56,165.76/x
  3. Step 3: Cross multiply
    139,213.44x = 208,854.72 × 56,165.76
  4. Step 4: Simplify right side
    139,213.44x = 11,730,484,078.39
  5. Step 5: Solve for x
    x = 11,730,484,078.39/139,213.44
  6. Step 6: Final answer
    x = 84,262.58

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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.