Home / 72,769.16-109,186.14-71,588.18

Finding the Fourth Proportional to 72,769.16, 109,186.14 and 71,588.18

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Solution

The fourth proportional to 72,769.16, 109,186.14 and 71,588.18 is: 107,414.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.16 : 109,186.14 = 71,588.18 : x
  2. Step 2: Convert to fraction form
    72,769.16/109,186.14 = 71,588.18/x
  3. Step 3: Cross multiply
    72,769.16x = 109,186.14 × 71,588.18
  4. Step 4: Simplify right side
    72,769.16x = 7,816,437,043.83
  5. Step 5: Solve for x
    x = 7,816,437,043.83/72,769.16
  6. Step 6: Final answer
    x = 107,414.14

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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.