Home / 140,478.31-193,961.60-86,836.87

Finding the Fourth Proportional to 140,478.31, 193,961.60 and 86,836.87

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Solution

The fourth proportional to 140,478.31, 193,961.60 and 86,836.87 is: 119,897.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,478.31 : 193,961.60 = 86,836.87 : x
  2. Step 2: Convert to fraction form
    140,478.31/193,961.60 = 86,836.87/x
  3. Step 3: Cross multiply
    140,478.31x = 193,961.60 × 86,836.87
  4. Step 4: Simplify right side
    140,478.31x = 16,843,018,244.19
  5. Step 5: Solve for x
    x = 16,843,018,244.19/140,478.31
  6. Step 6: Final answer
    x = 119,897.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.