Home / 140,309.43-193,617.90-76,647.21

Finding the Fourth Proportional to 140,309.43, 193,617.90 and 76,647.21

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Solution

The fourth proportional to 140,309.43, 193,617.90 and 76,647.21 is: 105,768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,309.43 : 193,617.90 = 76,647.21 : x
  2. Step 2: Convert to fraction form
    140,309.43/193,617.90 = 76,647.21/x
  3. Step 3: Cross multiply
    140,309.43x = 193,617.90 × 76,647.21
  4. Step 4: Simplify right side
    140,309.43x = 14,840,271,841.06
  5. Step 5: Solve for x
    x = 14,840,271,841.06/140,309.43
  6. Step 6: Final answer
    x = 105,768.17

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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.