Home / 98,005.98-135,324.42-75,309.18

Finding the Fourth Proportional to 98,005.98, 135,324.42 and 75,309.18

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Solution

The fourth proportional to 98,005.98, 135,324.42 and 75,309.18 is: 103,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,005.98 : 135,324.42 = 75,309.18 : x
  2. Step 2: Convert to fraction form
    98,005.98/135,324.42 = 75,309.18/x
  3. Step 3: Cross multiply
    98,005.98x = 135,324.42 × 75,309.18
  4. Step 4: Simplify right side
    98,005.98x = 10,191,171,104.18
  5. Step 5: Solve for x
    x = 10,191,171,104.18/98,005.98
  6. Step 6: Final answer
    x = 103,985.20

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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.