Home / 103,515.92-142,829.16-65,845.52

Finding the Fourth Proportional to 103,515.92, 142,829.16 and 65,845.52

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Solution

The fourth proportional to 103,515.92, 142,829.16 and 65,845.52 is: 90,852.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,515.92 : 142,829.16 = 65,845.52 : x
  2. Step 2: Convert to fraction form
    103,515.92/142,829.16 = 65,845.52/x
  3. Step 3: Cross multiply
    103,515.92x = 142,829.16 × 65,845.52
  4. Step 4: Simplify right side
    103,515.92x = 9,404,660,311.36
  5. Step 5: Solve for x
    x = 9,404,660,311.36/103,515.92
  6. Step 6: Final answer
    x = 90,852.31

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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.