Home / 115,298.58-159,186.05-72,336.94

Finding the Fourth Proportional to 115,298.58, 159,186.05 and 72,336.94

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Solution

The fourth proportional to 115,298.58, 159,186.05 and 72,336.94 is: 99,871.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,298.58 : 159,186.05 = 72,336.94 : x
  2. Step 2: Convert to fraction form
    115,298.58/159,186.05 = 72,336.94/x
  3. Step 3: Cross multiply
    115,298.58x = 159,186.05 × 72,336.94
  4. Step 4: Simplify right side
    115,298.58x = 11,515,031,747.69
  5. Step 5: Solve for x
    x = 11,515,031,747.69/115,298.58
  6. Step 6: Final answer
    x = 99,871.41

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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.