Home / 103,083.42-142,258.60-98,359.50

Finding the Fourth Proportional to 103,083.42, 142,258.60 and 98,359.50

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Solution

The fourth proportional to 103,083.42, 142,258.60 and 98,359.50 is: 135,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,083.42 : 142,258.60 = 98,359.50 : x
  2. Step 2: Convert to fraction form
    103,083.42/142,258.60 = 98,359.50/x
  3. Step 3: Cross multiply
    103,083.42x = 142,258.60 × 98,359.50
  4. Step 4: Simplify right side
    103,083.42x = 13,992,484,766.70
  5. Step 5: Solve for x
    x = 13,992,484,766.70/103,083.42
  6. Step 6: Final answer
    x = 135,739.43

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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.