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Finding the Fourth Proportional to 139,169.16, 208,663.02 and 59,165.64

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Solution

The fourth proportional to 139,169.16, 208,663.02 and 59,165.64 is: 88,709.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,169.16 : 208,663.02 = 59,165.64 : x
  2. Step 2: Convert to fraction form
    139,169.16/208,663.02 = 59,165.64/x
  3. Step 3: Cross multiply
    139,169.16x = 208,663.02 × 59,165.64
  4. Step 4: Simplify right side
    139,169.16x = 12,345,681,122.63
  5. Step 5: Solve for x
    x = 12,345,681,122.63/139,169.16
  6. Step 6: Final answer
    x = 88,709.89

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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.