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Finding the Fourth Proportional to 139,011.60, 208,356.08 and 63,974.22

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Solution

The fourth proportional to 139,011.60, 208,356.08 and 63,974.22 is: 95,887.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,011.60 : 208,356.08 = 63,974.22 : x
  2. Step 2: Convert to fraction form
    139,011.60/208,356.08 = 63,974.22/x
  3. Step 3: Cross multiply
    139,011.60x = 208,356.08 × 63,974.22
  4. Step 4: Simplify right side
    139,011.60x = 13,329,417,700.26
  5. Step 5: Solve for x
    x = 13,329,417,700.26/139,011.60
  6. Step 6: Final answer
    x = 95,887.09

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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.