Home / 145,016.90-200,124.52-80,490.61

Finding the Fourth Proportional to 145,016.90, 200,124.52 and 80,490.61

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Solution

The fourth proportional to 145,016.90, 200,124.52 and 80,490.61 is: 111,077.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,016.90 : 200,124.52 = 80,490.61 : x
  2. Step 2: Convert to fraction form
    145,016.90/200,124.52 = 80,490.61/x
  3. Step 3: Cross multiply
    145,016.90x = 200,124.52 × 80,490.61
  4. Step 4: Simplify right side
    145,016.90x = 16,108,145,192.45
  5. Step 5: Solve for x
    x = 16,108,145,192.45/145,016.90
  6. Step 6: Final answer
    x = 111,077.71

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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.