Home / 109,642.13-151,309.80-67,192.46

Finding the Fourth Proportional to 109,642.13, 151,309.80 and 67,192.46

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Solution

The fourth proportional to 109,642.13, 151,309.80 and 67,192.46 is: 92,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,642.13 : 151,309.80 = 67,192.46 : x
  2. Step 2: Convert to fraction form
    109,642.13/151,309.80 = 67,192.46/x
  3. Step 3: Cross multiply
    109,642.13x = 151,309.80 × 67,192.46
  4. Step 4: Simplify right side
    109,642.13x = 10,166,876,927.56
  5. Step 5: Solve for x
    x = 10,166,876,927.56/109,642.13
  6. Step 6: Final answer
    x = 92,727.84

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1.5x scale

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.