Home / 103,537.26-142,528.82-76,629.06

Finding the Fourth Proportional to 103,537.26, 142,528.82 and 76,629.06

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Solution

The fourth proportional to 103,537.26, 142,528.82 and 76,629.06 is: 105,487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,537.26 : 142,528.82 = 76,629.06 : x
  2. Step 2: Convert to fraction form
    103,537.26/142,528.82 = 76,629.06/x
  3. Step 3: Cross multiply
    103,537.26x = 142,528.82 × 76,629.06
  4. Step 4: Simplify right side
    103,537.26x = 10,921,849,116.36
  5. Step 5: Solve for x
    x = 10,921,849,116.36/103,537.26
  6. Step 6: Final answer
    x = 105,487.14

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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.