Home / 144,071.15-198,816.40-79,540.91

Finding the Fourth Proportional to 144,071.15, 198,816.40 and 79,540.91

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Solution

The fourth proportional to 144,071.15, 198,816.40 and 79,540.91 is: 109,765.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,071.15 : 198,816.40 = 79,540.91 : x
  2. Step 2: Convert to fraction form
    144,071.15/198,816.40 = 79,540.91/x
  3. Step 3: Cross multiply
    144,071.15x = 198,816.40 × 79,540.91
  4. Step 4: Simplify right side
    144,071.15x = 15,814,036,981.22
  5. Step 5: Solve for x
    x = 15,814,036,981.22/144,071.15
  6. Step 6: Final answer
    x = 109,765.47

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1.5x scale

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.