Home / 138,276.48-207,463.32-79,161.60

Finding the Fourth Proportional to 138,276.48, 207,463.32 and 79,161.60

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Solution

The fourth proportional to 138,276.48, 207,463.32 and 79,161.60 is: 118,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,276.48 : 207,463.32 = 79,161.60 : x
  2. Step 2: Convert to fraction form
    138,276.48/207,463.32 = 79,161.60/x
  3. Step 3: Cross multiply
    138,276.48x = 207,463.32 × 79,161.60
  4. Step 4: Simplify right side
    138,276.48x = 16,423,128,352.51
  5. Step 5: Solve for x
    x = 16,423,128,352.51/138,276.48
  6. Step 6: Final answer
    x = 118,770.22

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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.