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Finding the Fourth Proportional to 113,884.60, 157,148.80 and 66,128.60

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Solution

The fourth proportional to 113,884.60, 157,148.80 and 66,128.60 is: 91,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,884.60 : 157,148.80 = 66,128.60 : x
  2. Step 2: Convert to fraction form
    113,884.60/157,148.80 = 66,128.60/x
  3. Step 3: Cross multiply
    113,884.60x = 157,148.80 × 66,128.60
  4. Step 4: Simplify right side
    113,884.60x = 10,392,030,135.68
  5. Step 5: Solve for x
    x = 10,392,030,135.68/113,884.60
  6. Step 6: Final answer
    x = 91,250.53

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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.