Home / 143,140.02-197,542.20-82,721.70

Finding the Fourth Proportional to 143,140.02, 197,542.20 and 82,721.70

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Solution

The fourth proportional to 143,140.02, 197,542.20 and 82,721.70 is: 114,161.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,140.02 : 197,542.20 = 82,721.70 : x
  2. Step 2: Convert to fraction form
    143,140.02/197,542.20 = 82,721.70/x
  3. Step 3: Cross multiply
    143,140.02x = 197,542.20 × 82,721.70
  4. Step 4: Simplify right side
    143,140.02x = 16,341,026,605.74
  5. Step 5: Solve for x
    x = 16,341,026,605.74/143,140.02
  6. Step 6: Final answer
    x = 114,161.13

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1.5x scale

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.