Home / 101,985.83-140,626.98-69,725.70

Finding the Fourth Proportional to 101,985.83, 140,626.98 and 69,725.70

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Solution

The fourth proportional to 101,985.83, 140,626.98 and 69,725.70 is: 96,143.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,985.83 : 140,626.98 = 69,725.70 : x
  2. Step 2: Convert to fraction form
    101,985.83/140,626.98 = 69,725.70/x
  3. Step 3: Cross multiply
    101,985.83x = 140,626.98 × 69,725.70
  4. Step 4: Simplify right side
    101,985.83x = 9,805,314,619.39
  5. Step 5: Solve for x
    x = 9,805,314,619.39/101,985.83
  6. Step 6: Final answer
    x = 96,143.90

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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.