Home / 187,443.20-281,164.80-76,609.28

Finding the Fourth Proportional to 187,443.20, 281,164.80 and 76,609.28

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Solution

The fourth proportional to 187,443.20, 281,164.80 and 76,609.28 is: 114,913.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,443.20 : 281,164.80 = 76,609.28 : x
  2. Step 2: Convert to fraction form
    187,443.20/281,164.80 = 76,609.28/x
  3. Step 3: Cross multiply
    187,443.20x = 281,164.80 × 76,609.28
  4. Step 4: Simplify right side
    187,443.20x = 21,539,832,889.34
  5. Step 5: Solve for x
    x = 21,539,832,889.34/187,443.20
  6. Step 6: Final answer
    x = 114,913.92

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1.5x scale

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.