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Finding the Fourth Proportional to 139,333.32, 208,999.98 and 56,169

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Solution

The fourth proportional to 139,333.32, 208,999.98 and 56,169 is: 84,253.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,333.32 : 208,999.98 = 56,169 : x
  2. Step 2: Convert to fraction form
    139,333.32/208,999.98 = 56,169/x
  3. Step 3: Cross multiply
    139,333.32x = 208,999.98 × 56,169
  4. Step 4: Simplify right side
    139,333.32x = 11,739,319,876.62
  5. Step 5: Solve for x
    x = 11,739,319,876.62/139,333.32
  6. Step 6: Final answer
    x = 84,253.50

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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.