Home / 140,137.48-193,393.83-76,479.40

Finding the Fourth Proportional to 140,137.48, 193,393.83 and 76,479.40

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Solution

The fourth proportional to 140,137.48, 193,393.83 and 76,479.40 is: 105,543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,137.48 : 193,393.83 = 76,479.40 : x
  2. Step 2: Convert to fraction form
    140,137.48/193,393.83 = 76,479.40/x
  3. Step 3: Cross multiply
    140,137.48x = 193,393.83 × 76,479.40
  4. Step 4: Simplify right side
    140,137.48x = 14,790,644,082.10
  5. Step 5: Solve for x
    x = 14,790,644,082.10/140,137.48
  6. Step 6: Final answer
    x = 105,543.81

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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.