Home / 145,029.66-200,135.52-81,370.95

Finding the Fourth Proportional to 145,029.66, 200,135.52 and 81,370.95

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Solution

The fourth proportional to 145,029.66, 200,135.52 and 81,370.95 is: 112,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,029.66 : 200,135.52 = 81,370.95 : x
  2. Step 2: Convert to fraction form
    145,029.66/200,135.52 = 81,370.95/x
  3. Step 3: Cross multiply
    145,029.66x = 200,135.52 × 81,370.95
  4. Step 4: Simplify right side
    145,029.66x = 16,285,217,391.14
  5. Step 5: Solve for x
    x = 16,285,217,391.14/145,029.66
  6. Step 6: Final answer
    x = 112,288.88

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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.