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Finding the Fourth Proportional to 139,744.64, 209,664.80 and 59,749.65

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Solution

The fourth proportional to 139,744.64, 209,664.80 and 59,749.65 is: 89,644.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,744.64 : 209,664.80 = 59,749.65 : x
  2. Step 2: Convert to fraction form
    139,744.64/209,664.80 = 59,749.65/x
  3. Step 3: Cross multiply
    139,744.64x = 209,664.80 × 59,749.65
  4. Step 4: Simplify right side
    139,744.64x = 12,527,398,417.32
  5. Step 5: Solve for x
    x = 12,527,398,417.32/139,744.64
  6. Step 6: Final answer
    x = 89,644.93

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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.