Home / 109,764.84-151,412.31-66,127.08

Finding the Fourth Proportional to 109,764.84, 151,412.31 and 66,127.08

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Solution

The fourth proportional to 109,764.84, 151,412.31 and 66,127.08 is: 91,217.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,764.84 : 151,412.31 = 66,127.08 : x
  2. Step 2: Convert to fraction form
    109,764.84/151,412.31 = 66,127.08/x
  3. Step 3: Cross multiply
    109,764.84x = 151,412.31 × 66,127.08
  4. Step 4: Simplify right side
    109,764.84x = 10,012,453,936.35
  5. Step 5: Solve for x
    x = 10,012,453,936.35/109,764.84
  6. Step 6: Final answer
    x = 91,217.31

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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.