Home / 144,009.48-198,742.64-80,348.66

Finding the Fourth Proportional to 144,009.48, 198,742.64 and 80,348.66

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Solution

The fourth proportional to 144,009.48, 198,742.64 and 80,348.66 is: 110,886.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,009.48 : 198,742.64 = 80,348.66 : x
  2. Step 2: Convert to fraction form
    144,009.48/198,742.64 = 80,348.66/x
  3. Step 3: Cross multiply
    144,009.48x = 198,742.64 × 80,348.66
  4. Step 4: Simplify right side
    144,009.48x = 15,968,704,808.86
  5. Step 5: Solve for x
    x = 15,968,704,808.86/144,009.48
  6. Step 6: Final answer
    x = 110,886.48

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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.