Home / 140,031.81-193,241.57-76,365.81

Finding the Fourth Proportional to 140,031.81, 193,241.57 and 76,365.81

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Solution

The fourth proportional to 140,031.81, 193,241.57 and 76,365.81 is: 105,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,031.81 : 193,241.57 = 76,365.81 : x
  2. Step 2: Convert to fraction form
    140,031.81/193,241.57 = 76,365.81/x
  3. Step 3: Cross multiply
    140,031.81x = 193,241.57 × 76,365.81
  4. Step 4: Simplify right side
    140,031.81x = 14,757,048,636.89
  5. Step 5: Solve for x
    x = 14,757,048,636.89/140,031.81
  6. Step 6: Final answer
    x = 105,383.55

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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.