Home / 109,721.04-151,417.80-67,302.96

Finding the Fourth Proportional to 109,721.04, 151,417.80 and 67,302.96

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Solution

The fourth proportional to 109,721.04, 151,417.80 and 67,302.96 is: 92,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,721.04 : 151,417.80 = 67,302.96 : x
  2. Step 2: Convert to fraction form
    109,721.04/151,417.80 = 67,302.96/x
  3. Step 3: Cross multiply
    109,721.04x = 151,417.80 × 67,302.96
  4. Step 4: Simplify right side
    109,721.04x = 10,190,866,136.69
  5. Step 5: Solve for x
    x = 10,190,866,136.69/109,721.04
  6. Step 6: Final answer
    x = 92,879.78

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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.