Home / 100,802.19-151,118.53-67,420.37

Finding the Fourth Proportional to 100,802.19, 151,118.53 and 67,420.37

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Solution

The fourth proportional to 100,802.19, 151,118.53 and 67,420.37 is: 101,073.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,802.19 : 151,118.53 = 67,420.37 : x
  2. Step 2: Convert to fraction form
    100,802.19/151,118.53 = 67,420.37/x
  3. Step 3: Cross multiply
    100,802.19x = 151,118.53 × 67,420.37
  4. Step 4: Simplify right side
    100,802.19x = 10,188,467,206.46
  5. Step 5: Solve for x
    x = 10,188,467,206.46/100,802.19
  6. Step 6: Final answer
    x = 101,073.87

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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.