Home / 142,284,691.10-196,337,757.24-78,694,925.42

Finding the Fourth Proportional to 142,284,691.10, 196,337,757.24 and 78,694,925.42

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Solution

The fourth proportional to 142,284,691.10, 196,337,757.24 and 78,694,925.42 is: 108,590,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,284,691.10 : 196,337,757.24 = 78,694,925.42 : x
  2. Step 2: Convert to fraction form
    142,284,691.10/196,337,757.24 = 78,694,925.42/x
  3. Step 3: Cross multiply
    142,284,691.10x = 196,337,757.24 × 78,694,925.42
  4. Step 4: Simplify right side
    142,284,691.10x = 15,450,785,163,622,710
  5. Step 5: Solve for x
    x = 15,450,785,163,622,710/142,284,691.10
  6. Step 6: Final answer
    x = 108,590,636.45

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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.