Home / 143,501.10-198,031.62-79,838.94

Finding the Fourth Proportional to 143,501.10, 198,031.62 and 79,838.94

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Solution

The fourth proportional to 143,501.10, 198,031.62 and 79,838.94 is: 110,177.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,501.10 : 198,031.62 = 79,838.94 : x
  2. Step 2: Convert to fraction form
    143,501.10/198,031.62 = 79,838.94/x
  3. Step 3: Cross multiply
    143,501.10x = 198,031.62 × 79,838.94
  4. Step 4: Simplify right side
    143,501.10x = 15,810,634,627.28
  5. Step 5: Solve for x
    x = 15,810,634,627.28/143,501.10
  6. Step 6: Final answer
    x = 110,177.79

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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.