Home / 103,537.51-142,529.16-76,629.31

Finding the Fourth Proportional to 103,537.51, 142,529.16 and 76,629.31

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Solution

The fourth proportional to 103,537.51, 142,529.16 and 76,629.31 is: 105,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,537.51 : 142,529.16 = 76,629.31 : x
  2. Step 2: Convert to fraction form
    103,537.51/142,529.16 = 76,629.31/x
  3. Step 3: Cross multiply
    103,537.51x = 142,529.16 × 76,629.31
  4. Step 4: Simplify right side
    103,537.51x = 10,921,911,185.68
  5. Step 5: Solve for x
    x = 10,921,911,185.68/103,537.51
  6. Step 6: Final answer
    x = 105,487.48

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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.