Home / 187,628.72-281,441.32-81,088.00

Finding the Fourth Proportional to 187,628.72, 281,441.32 and 81,088.00

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Solution

The fourth proportional to 187,628.72, 281,441.32 and 81,088.00 is: 121,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,628.72 : 281,441.32 = 81,088.00 : x
  2. Step 2: Convert to fraction form
    187,628.72/281,441.32 = 81,088.00/x
  3. Step 3: Cross multiply
    187,628.72x = 281,441.32 × 81,088.00
  4. Step 4: Simplify right side
    187,628.72x = 22,821,514,432.94
  5. Step 5: Solve for x
    x = 22,821,514,432.94/187,628.72
  6. Step 6: Final answer
    x = 121,631.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.