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Finding the Fourth Proportional to 139,140.57, 208,722.51 and 44,384.34

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Solution

The fourth proportional to 139,140.57, 208,722.51 and 44,384.34 is: 66,580.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,140.57 : 208,722.51 = 44,384.34 : x
  2. Step 2: Convert to fraction form
    139,140.57/208,722.51 = 44,384.34/x
  3. Step 3: Cross multiply
    139,140.57x = 208,722.51 × 44,384.34
  4. Step 4: Simplify right side
    139,140.57x = 9,264,010,849.49
  5. Step 5: Solve for x
    x = 9,264,010,849.49/139,140.57
  6. Step 6: Final answer
    x = 66,580.23

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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.