Home / 142,992,651.53-197,324,048.58-81,111,661.49

Finding the Fourth Proportional to 142,992,651.53, 197,324,048.58 and 81,111,661.49

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Solution

The fourth proportional to 142,992,651.53, 197,324,048.58 and 81,111,661.49 is: 111,930,796.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,651.53 : 197,324,048.58 = 81,111,661.49 : x
  2. Step 2: Convert to fraction form
    142,992,651.53/197,324,048.58 = 81,111,661.49/x
  3. Step 3: Cross multiply
    142,992,651.53x = 197,324,048.58 × 81,111,661.49
  4. Step 4: Simplify right side
    142,992,651.53x = 16,005,281,432,257,276
  5. Step 5: Solve for x
    x = 16,005,281,432,257,276/142,992,651.53
  6. Step 6: Final answer
    x = 111,930,796.87

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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.