Home / 140,291.40-193,601.91-76,629.20

Finding the Fourth Proportional to 140,291.40, 193,601.91 and 76,629.20

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Solution

The fourth proportional to 140,291.40, 193,601.91 and 76,629.20 is: 105,748.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,291.40 : 193,601.91 = 76,629.20 : x
  2. Step 2: Convert to fraction form
    140,291.40/193,601.91 = 76,629.20/x
  3. Step 3: Cross multiply
    140,291.40x = 193,601.91 × 76,629.20
  4. Step 4: Simplify right side
    140,291.40x = 14,835,558,513.76
  5. Step 5: Solve for x
    x = 14,835,558,513.76/140,291.40
  6. Step 6: Final answer
    x = 105,748.17

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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.