Home / 140,015.81-193,221.83-76,354.07

Finding the Fourth Proportional to 140,015.81, 193,221.83 and 76,354.07

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Solution

The fourth proportional to 140,015.81, 193,221.83 and 76,354.07 is: 105,368.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,015.81 : 193,221.83 = 76,354.07 : x
  2. Step 2: Convert to fraction form
    140,015.81/193,221.83 = 76,354.07/x
  3. Step 3: Cross multiply
    140,015.81x = 193,221.83 × 76,354.07
  4. Step 4: Simplify right side
    140,015.81x = 14,753,272,358.12
  5. Step 5: Solve for x
    x = 14,753,272,358.12/140,015.81
  6. Step 6: Final answer
    x = 105,368.62

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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.