Home / 140,135.47-193,387.64-76,474.60

Finding the Fourth Proportional to 140,135.47, 193,387.64 and 76,474.60

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Solution

The fourth proportional to 140,135.47, 193,387.64 and 76,474.60 is: 105,535.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,135.47 : 193,387.64 = 76,474.60 : x
  2. Step 2: Convert to fraction form
    140,135.47/193,387.64 = 76,474.60/x
  3. Step 3: Cross multiply
    140,135.47x = 193,387.64 × 76,474.60
  4. Step 4: Simplify right side
    140,135.47x = 14,789,241,548.10
  5. Step 5: Solve for x
    x = 14,789,241,548.10/140,135.47
  6. Step 6: Final answer
    x = 105,535.32

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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.