Home / 135,157.89-186,531.48-74,733.11

Finding the Fourth Proportional to 135,157.89, 186,531.48 and 74,733.11

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Solution

The fourth proportional to 135,157.89, 186,531.48 and 74,733.11 is: 103,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,157.89 : 186,531.48 = 74,733.11 : x
  2. Step 2: Convert to fraction form
    135,157.89/186,531.48 = 74,733.11/x
  3. Step 3: Cross multiply
    135,157.89x = 186,531.48 × 74,733.11
  4. Step 4: Simplify right side
    135,157.89x = 13,940,076,680.65
  5. Step 5: Solve for x
    x = 13,940,076,680.65/135,157.89
  6. Step 6: Final answer
    x = 103,139.20

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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.