Home / 128,898.39-193,347.60-40,159.05

Finding the Fourth Proportional to 128,898.39, 193,347.60 and 40,159.05

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Solution

The fourth proportional to 128,898.39, 193,347.60 and 40,159.05 is: 60,238.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,898.39 : 193,347.60 = 40,159.05 : x
  2. Step 2: Convert to fraction form
    128,898.39/193,347.60 = 40,159.05/x
  3. Step 3: Cross multiply
    128,898.39x = 193,347.60 × 40,159.05
  4. Step 4: Simplify right side
    128,898.39x = 7,764,655,935.78
  5. Step 5: Solve for x
    x = 7,764,655,935.78/128,898.39
  6. Step 6: Final answer
    x = 60,238.58

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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.