Home / 145,234.64-200,442.59-81,572.43

Finding the Fourth Proportional to 145,234.64, 200,442.59 and 81,572.43

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Solution

The fourth proportional to 145,234.64, 200,442.59 and 81,572.43 is: 112,580.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,234.64 : 200,442.59 = 81,572.43 : x
  2. Step 2: Convert to fraction form
    145,234.64/200,442.59 = 81,572.43/x
  3. Step 3: Cross multiply
    145,234.64x = 200,442.59 × 81,572.43
  4. Step 4: Simplify right side
    145,234.64x = 16,350,589,141.79
  5. Step 5: Solve for x
    x = 16,350,589,141.79/145,234.64
  6. Step 6: Final answer
    x = 112,580.51

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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.