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Finding the Fourth Proportional to 113,880.85, 157,143.64 and 66,124.87

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Solution

The fourth proportional to 113,880.85, 157,143.64 and 66,124.87 is: 91,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,880.85 : 157,143.64 = 66,124.87 : x
  2. Step 2: Convert to fraction form
    113,880.85/157,143.64 = 66,124.87/x
  3. Step 3: Cross multiply
    113,880.85x = 157,143.64 × 66,124.87
  4. Step 4: Simplify right side
    113,880.85x = 10,391,102,766.33
  5. Step 5: Solve for x
    x = 10,391,102,766.33/113,880.85
  6. Step 6: Final answer
    x = 91,245.39

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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.