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Finding the Fourth Proportional to 140,054.60, 209,906.70 and 69,953.48

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Solution

The fourth proportional to 140,054.60, 209,906.70 and 69,953.48 is: 104,842.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,054.60 : 209,906.70 = 69,953.48 : x
  2. Step 2: Convert to fraction form
    140,054.60/209,906.70 = 69,953.48/x
  3. Step 3: Cross multiply
    140,054.60x = 209,906.70 × 69,953.48
  4. Step 4: Simplify right side
    140,054.60x = 14,683,704,140.32
  5. Step 5: Solve for x
    x = 14,683,704,140.32/140,054.60
  6. Step 6: Final answer
    x = 104,842.71

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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.