Home / 138,829.60-208,244.40-68,845.60

Finding the Fourth Proportional to 138,829.60, 208,244.40 and 68,845.60

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Solution

The fourth proportional to 138,829.60, 208,244.40 and 68,845.60 is: 103,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,829.60 : 208,244.40 = 68,845.60 : x
  2. Step 2: Convert to fraction form
    138,829.60/208,244.40 = 68,845.60/x
  3. Step 3: Cross multiply
    138,829.60x = 208,244.40 × 68,845.60
  4. Step 4: Simplify right side
    138,829.60x = 14,336,710,664.64
  5. Step 5: Solve for x
    x = 14,336,710,664.64/138,829.60
  6. Step 6: Final answer
    x = 103,268.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.