Home / 142,743,029.86-196,985,381.20-80,863,368.42

Finding the Fourth Proportional to 142,743,029.86, 196,985,381.20 and 80,863,368.42

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Solution

The fourth proportional to 142,743,029.86, 196,985,381.20 and 80,863,368.42 is: 111,591,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,743,029.86 : 196,985,381.20 = 80,863,368.42 : x
  2. Step 2: Convert to fraction form
    142,743,029.86/196,985,381.20 = 80,863,368.42/x
  3. Step 3: Cross multiply
    142,743,029.86x = 196,985,381.20 × 80,863,368.42
  4. Step 4: Simplify right side
    142,743,029.86x = 15,928,901,453,329,742
  5. Step 5: Solve for x
    x = 15,928,901,453,329,742/142,743,029.86
  6. Step 6: Final answer
    x = 111,591,448.42

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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.