Home / 129,621.18-178,888.50-73,043.52

Finding the Fourth Proportional to 129,621.18, 178,888.50 and 73,043.52

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Solution

The fourth proportional to 129,621.18, 178,888.50 and 73,043.52 is: 100,806.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,621.18 : 178,888.50 = 73,043.52 : x
  2. Step 2: Convert to fraction form
    129,621.18/178,888.50 = 73,043.52/x
  3. Step 3: Cross multiply
    129,621.18x = 178,888.50 × 73,043.52
  4. Step 4: Simplify right side
    129,621.18x = 13,066,645,727.52
  5. Step 5: Solve for x
    x = 13,066,645,727.52/129,621.18
  6. Step 6: Final answer
    x = 100,806.41

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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.