Home / 117,207.63-161,761.28-66,222.90

Finding the Fourth Proportional to 117,207.63, 161,761.28 and 66,222.90

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Solution

The fourth proportional to 117,207.63, 161,761.28 and 66,222.90 is: 91,395.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,207.63 : 161,761.28 = 66,222.90 : x
  2. Step 2: Convert to fraction form
    117,207.63/161,761.28 = 66,222.90/x
  3. Step 3: Cross multiply
    117,207.63x = 161,761.28 × 66,222.90
  4. Step 4: Simplify right side
    117,207.63x = 10,712,300,738.20
  5. Step 5: Solve for x
    x = 10,712,300,738.20/117,207.63
  6. Step 6: Final answer
    x = 91,395.93

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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.