Home / 105,126.49-157,650.99-82,681.06

Finding the Fourth Proportional to 105,126.49, 157,650.99 and 82,681.06

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Solution

The fourth proportional to 105,126.49, 157,650.99 and 82,681.06 is: 123,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,126.49 : 157,650.99 = 82,681.06 : x
  2. Step 2: Convert to fraction form
    105,126.49/157,650.99 = 82,681.06/x
  3. Step 3: Cross multiply
    105,126.49x = 157,650.99 × 82,681.06
  4. Step 4: Simplify right side
    105,126.49x = 13,034,750,963.25
  5. Step 5: Solve for x
    x = 13,034,750,963.25/105,126.49
  6. Step 6: Final answer
    x = 123,991.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.