Home / 139,275.48-192,204.57-78,845.03

Finding the Fourth Proportional to 139,275.48, 192,204.57 and 78,845.03

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Solution

The fourth proportional to 139,275.48, 192,204.57 and 78,845.03 is: 108,808.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,275.48 : 192,204.57 = 78,845.03 : x
  2. Step 2: Convert to fraction form
    139,275.48/192,204.57 = 78,845.03/x
  3. Step 3: Cross multiply
    139,275.48x = 192,204.57 × 78,845.03
  4. Step 4: Simplify right side
    139,275.48x = 15,154,374,126.76
  5. Step 5: Solve for x
    x = 15,154,374,126.76/139,275.48
  6. Step 6: Final answer
    x = 108,808.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.