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Finding the Fourth Proportional to 139,431.87, 209,152.71 and 44,664.93

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Solution

The fourth proportional to 139,431.87, 209,152.71 and 44,664.93 is: 66,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,431.87 : 209,152.71 = 44,664.93 : x
  2. Step 2: Convert to fraction form
    139,431.87/209,152.71 = 44,664.93/x
  3. Step 3: Cross multiply
    139,431.87x = 209,152.71 × 44,664.93
  4. Step 4: Simplify right side
    139,431.87x = 9,341,791,151.46
  5. Step 5: Solve for x
    x = 9,341,791,151.46/139,431.87
  6. Step 6: Final answer
    x = 66,998.97

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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.