Home / 138,555.32-191,206.30-74,893.08

Finding the Fourth Proportional to 138,555.32, 191,206.30 and 74,893.08

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Solution

The fourth proportional to 138,555.32, 191,206.30 and 74,893.08 is: 103,352.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,555.32 : 191,206.30 = 74,893.08 : x
  2. Step 2: Convert to fraction form
    138,555.32/191,206.30 = 74,893.08/x
  3. Step 3: Cross multiply
    138,555.32x = 191,206.30 × 74,893.08
  4. Step 4: Simplify right side
    138,555.32x = 14,320,028,722.40
  5. Step 5: Solve for x
    x = 14,320,028,722.40/138,555.32
  6. Step 6: Final answer
    x = 103,352.43

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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.