Home / 143,516.76-198,030.72-79,854.36

Finding the Fourth Proportional to 143,516.76, 198,030.72 and 79,854.36

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Solution

The fourth proportional to 143,516.76, 198,030.72 and 79,854.36 is: 110,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,516.76 : 198,030.72 = 79,854.36 : x
  2. Step 2: Convert to fraction form
    143,516.76/198,030.72 = 79,854.36/x
  3. Step 3: Cross multiply
    143,516.76x = 198,030.72 × 79,854.36
  4. Step 4: Simplify right side
    143,516.76x = 15,813,616,405.94
  5. Step 5: Solve for x
    x = 15,813,616,405.94/143,516.76
  6. Step 6: Final answer
    x = 110,186.55

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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.