Home / 128,985.52-193,523.64-40,261.36

Finding the Fourth Proportional to 128,985.52, 193,523.64 and 40,261.36

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Solution

The fourth proportional to 128,985.52, 193,523.64 and 40,261.36 is: 60,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,985.52 : 193,523.64 = 40,261.36 : x
  2. Step 2: Convert to fraction form
    128,985.52/193,523.64 = 40,261.36/x
  3. Step 3: Cross multiply
    128,985.52x = 193,523.64 × 40,261.36
  4. Step 4: Simplify right side
    128,985.52x = 7,791,524,938.55
  5. Step 5: Solve for x
    x = 7,791,524,938.55/128,985.52
  6. Step 6: Final answer
    x = 60,406.20

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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.