Home / 128,871.51-193,335.07-38,906.76

Finding the Fourth Proportional to 128,871.51, 193,335.07 and 38,906.76

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Solution

The fourth proportional to 128,871.51, 193,335.07 and 38,906.76 is: 58,368.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,871.51 : 193,335.07 = 38,906.76 : x
  2. Step 2: Convert to fraction form
    128,871.51/193,335.07 = 38,906.76/x
  3. Step 3: Cross multiply
    128,871.51x = 193,335.07 × 38,906.76
  4. Step 4: Simplify right side
    128,871.51x = 7,522,041,168.07
  5. Step 5: Solve for x
    x = 7,522,041,168.07/128,871.51
  6. Step 6: Final answer
    x = 58,368.53

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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.