Home / 138,467.19-191,084.90-74,805

Finding the Fourth Proportional to 138,467.19, 191,084.90 and 74,805

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Solution

The fourth proportional to 138,467.19, 191,084.90 and 74,805 is: 103,231.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,467.19 : 191,084.90 = 74,805 : x
  2. Step 2: Convert to fraction form
    138,467.19/191,084.90 = 74,805/x
  3. Step 3: Cross multiply
    138,467.19x = 191,084.90 × 74,805
  4. Step 4: Simplify right side
    138,467.19x = 14,294,105,944.50
  5. Step 5: Solve for x
    x = 14,294,105,944.50/138,467.19
  6. Step 6: Final answer
    x = 103,231.00

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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.