Home / 128,664.45-193,015.31-39,925.10

Finding the Fourth Proportional to 128,664.45, 193,015.31 and 39,925.10

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Solution

The fourth proportional to 128,664.45, 193,015.31 and 39,925.10 is: 59,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,664.45 : 193,015.31 = 39,925.10 : x
  2. Step 2: Convert to fraction form
    128,664.45/193,015.31 = 39,925.10/x
  3. Step 3: Cross multiply
    128,664.45x = 193,015.31 × 39,925.10
  4. Step 4: Simplify right side
    128,664.45x = 7,706,155,836.19
  5. Step 5: Solve for x
    x = 7,706,155,836.19/128,664.45
  6. Step 6: Final answer
    x = 59,893.43

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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.