Home / 138,798.22-208,274.32-67,721.46

Finding the Fourth Proportional to 138,798.22, 208,274.32 and 67,721.46

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Solution

The fourth proportional to 138,798.22, 208,274.32 and 67,721.46 is: 101,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,798.22 : 208,274.32 = 67,721.46 : x
  2. Step 2: Convert to fraction form
    138,798.22/208,274.32 = 67,721.46/x
  3. Step 3: Cross multiply
    138,798.22x = 208,274.32 × 67,721.46
  4. Step 4: Simplify right side
    138,798.22x = 14,104,641,030.91
  5. Step 5: Solve for x
    x = 14,104,641,030.91/138,798.22
  6. Step 6: Final answer
    x = 101,619.75

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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.