Home / 117,738.66-162,539.56-90,820.74

Finding the Fourth Proportional to 117,738.66, 162,539.56 and 90,820.74

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Solution

The fourth proportional to 117,738.66, 162,539.56 and 90,820.74 is: 125,379.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,738.66 : 162,539.56 = 90,820.74 : x
  2. Step 2: Convert to fraction form
    117,738.66/162,539.56 = 90,820.74/x
  3. Step 3: Cross multiply
    117,738.66x = 162,539.56 × 90,820.74
  4. Step 4: Simplify right side
    117,738.66x = 14,761,963,118.47
  5. Step 5: Solve for x
    x = 14,761,963,118.47/117,738.66
  6. Step 6: Final answer
    x = 125,379.07

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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.