Home / 113,915.64-157,204.62-66,171

Finding the Fourth Proportional to 113,915.64, 157,204.62 and 66,171

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Solution

The fourth proportional to 113,915.64, 157,204.62 and 66,171 is: 91,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,915.64 : 157,204.62 = 66,171 : x
  2. Step 2: Convert to fraction form
    113,915.64/157,204.62 = 66,171/x
  3. Step 3: Cross multiply
    113,915.64x = 157,204.62 × 66,171
  4. Step 4: Simplify right side
    113,915.64x = 10,402,386,910.02
  5. Step 5: Solve for x
    x = 10,402,386,910.02/113,915.64
  6. Step 6: Final answer
    x = 91,316.58

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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.