Home / 142,992,723.20-197,324,146.98-81,111,733.16

Finding the Fourth Proportional to 142,992,723.20, 197,324,146.98 and 81,111,733.16

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Solution

The fourth proportional to 142,992,723.20, 197,324,146.98 and 81,111,733.16 is: 111,930,895.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,723.20 : 197,324,146.98 = 81,111,733.16 : x
  2. Step 2: Convert to fraction form
    142,992,723.20/197,324,146.98 = 81,111,733.16/x
  3. Step 3: Cross multiply
    142,992,723.20x = 197,324,146.98 × 81,111,733.16
  4. Step 4: Simplify right side
    142,992,723.20x = 16,005,303,554,879,758
  5. Step 5: Solve for x
    x = 16,005,303,554,879,758/142,992,723.20
  6. Step 6: Final answer
    x = 111,930,895.48

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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.