Home / 140,668.99-193,921.43-100,312.76

Finding the Fourth Proportional to 140,668.99, 193,921.43 and 100,312.76

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Solution

The fourth proportional to 140,668.99, 193,921.43 and 100,312.76 is: 138,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,668.99 : 193,921.43 = 100,312.76 : x
  2. Step 2: Convert to fraction form
    140,668.99/193,921.43 = 100,312.76/x
  3. Step 3: Cross multiply
    140,668.99x = 193,921.43 × 100,312.76
  4. Step 4: Simplify right side
    140,668.99x = 19,452,793,849.69
  5. Step 5: Solve for x
    x = 19,452,793,849.69/140,668.99
  6. Step 6: Final answer
    x = 138,287.72

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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.