Home / 109,712.30-151,298.97-75,666.38

Finding the Fourth Proportional to 109,712.30, 151,298.97 and 75,666.38

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Solution

The fourth proportional to 109,712.30, 151,298.97 and 75,666.38 is: 104,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,712.30 : 151,298.97 = 75,666.38 : x
  2. Step 2: Convert to fraction form
    109,712.30/151,298.97 = 75,666.38/x
  3. Step 3: Cross multiply
    109,712.30x = 151,298.97 × 75,666.38
  4. Step 4: Simplify right side
    109,712.30x = 11,448,245,357.63
  5. Step 5: Solve for x
    x = 11,448,245,357.63/109,712.30
  6. Step 6: Final answer
    x = 104,347.87

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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.