Home / 143,143.71-197,554.11-81,895.59

Finding the Fourth Proportional to 143,143.71, 197,554.11 and 81,895.59

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Solution

The fourth proportional to 143,143.71, 197,554.11 and 81,895.59 is: 113,024.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,143.71 : 197,554.11 = 81,895.59 : x
  2. Step 2: Convert to fraction form
    143,143.71/197,554.11 = 81,895.59/x
  3. Step 3: Cross multiply
    143,143.71x = 197,554.11 × 81,895.59
  4. Step 4: Simplify right side
    143,143.71x = 16,178,810,088.27
  5. Step 5: Solve for x
    x = 16,178,810,088.27/143,143.71
  6. Step 6: Final answer
    x = 113,024.95

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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.