Home / 140,393.40-193,743.39-76,731.22

Finding the Fourth Proportional to 140,393.40, 193,743.39 and 76,731.22

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Solution

The fourth proportional to 140,393.40, 193,743.39 and 76,731.22 is: 105,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,393.40 : 193,743.39 = 76,731.22 : x
  2. Step 2: Convert to fraction form
    140,393.40/193,743.39 = 76,731.22/x
  3. Step 3: Cross multiply
    140,393.40x = 193,743.39 × 76,731.22
  4. Step 4: Simplify right side
    140,393.40x = 14,866,166,681.64
  5. Step 5: Solve for x
    x = 14,866,166,681.64/140,393.40
  6. Step 6: Final answer
    x = 105,889.36

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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.