Home / 142,582.67-196,743.48-78,920.31

Finding the Fourth Proportional to 142,582.67, 196,743.48 and 78,920.31

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Solution

The fourth proportional to 142,582.67, 196,743.48 and 78,920.31 is: 108,898.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,582.67 : 196,743.48 = 78,920.31 : x
  2. Step 2: Convert to fraction form
    142,582.67/196,743.48 = 78,920.31/x
  3. Step 3: Cross multiply
    142,582.67x = 196,743.48 × 78,920.31
  4. Step 4: Simplify right side
    142,582.67x = 15,527,056,432.08
  5. Step 5: Solve for x
    x = 15,527,056,432.08/142,582.67
  6. Step 6: Final answer
    x = 108,898.63

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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.