Home / 130,243.36-179,727.14-72,872.72

Finding the Fourth Proportional to 130,243.36, 179,727.14 and 72,872.72

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Solution

The fourth proportional to 130,243.36, 179,727.14 and 72,872.72 is: 100,559.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,243.36 : 179,727.14 = 72,872.72 : x
  2. Step 2: Convert to fraction form
    130,243.36/179,727.14 = 72,872.72/x
  3. Step 3: Cross multiply
    130,243.36x = 179,727.14 × 72,872.72
  4. Step 4: Simplify right side
    130,243.36x = 13,097,205,549.62
  5. Step 5: Solve for x
    x = 13,097,205,549.62/130,243.36
  6. Step 6: Final answer
    x = 100,559.49

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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.