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Finding the Fourth Proportional to 133,284.88, 183,915.36 and 85,602.76

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Solution

The fourth proportional to 133,284.88, 183,915.36 and 85,602.76 is: 118,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,284.88 : 183,915.36 = 85,602.76 : x
  2. Step 2: Convert to fraction form
    133,284.88/183,915.36 = 85,602.76/x
  3. Step 3: Cross multiply
    133,284.88x = 183,915.36 × 85,602.76
  4. Step 4: Simplify right side
    133,284.88x = 15,743,662,422.39
  5. Step 5: Solve for x
    x = 15,743,662,422.39/133,284.88
  6. Step 6: Final answer
    x = 118,120.39

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1.5x scale

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.