Home / 109,711.80-151,298.28-75,665.88

Finding the Fourth Proportional to 109,711.80, 151,298.28 and 75,665.88

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Solution

The fourth proportional to 109,711.80, 151,298.28 and 75,665.88 is: 104,347.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,711.80 : 151,298.28 = 75,665.88 : x
  2. Step 2: Convert to fraction form
    109,711.80/151,298.28 = 75,665.88/x
  3. Step 3: Cross multiply
    109,711.80x = 151,298.28 × 75,665.88
  4. Step 4: Simplify right side
    109,711.80x = 11,448,117,498.69
  5. Step 5: Solve for x
    x = 11,448,117,498.69/109,711.80
  6. Step 6: Final answer
    x = 104,347.19

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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.