Home / 139,981.23-193,165.76-79,543.48

Finding the Fourth Proportional to 139,981.23, 193,165.76 and 79,543.48

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Solution

The fourth proportional to 139,981.23, 193,165.76 and 79,543.48 is: 109,765.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,981.23 : 193,165.76 = 79,543.48 : x
  2. Step 2: Convert to fraction form
    139,981.23/193,165.76 = 79,543.48/x
  3. Step 3: Cross multiply
    139,981.23x = 193,165.76 × 79,543.48
  4. Step 4: Simplify right side
    139,981.23x = 15,365,076,767.24
  5. Step 5: Solve for x
    x = 15,365,076,767.24/139,981.23
  6. Step 6: Final answer
    x = 109,765.27

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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.