Home / 98,005.97-135,324.42-75,309.19

Finding the Fourth Proportional to 98,005.97, 135,324.42 and 75,309.19

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Solution

The fourth proportional to 98,005.97, 135,324.42 and 75,309.19 is: 103,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,005.97 : 135,324.42 = 75,309.19 : x
  2. Step 2: Convert to fraction form
    98,005.97/135,324.42 = 75,309.19/x
  3. Step 3: Cross multiply
    98,005.97x = 135,324.42 × 75,309.19
  4. Step 4: Simplify right side
    98,005.97x = 10,191,172,457.42
  5. Step 5: Solve for x
    x = 10,191,172,457.42/98,005.97
  6. Step 6: Final answer
    x = 103,985.22

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1.5x scale

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.