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Finding the Fourth Proportional to 99,460.85, 137,255.84 and 54,138.69

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Solution

The fourth proportional to 99,460.85, 137,255.84 and 54,138.69 is: 74,711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,460.85 : 137,255.84 = 54,138.69 : x
  2. Step 2: Convert to fraction form
    99,460.85/137,255.84 = 54,138.69/x
  3. Step 3: Cross multiply
    99,460.85x = 137,255.84 × 54,138.69
  4. Step 4: Simplify right side
    99,460.85x = 7,430,851,372.45
  5. Step 5: Solve for x
    x = 7,430,851,372.45/99,460.85
  6. Step 6: Final answer
    x = 74,711.32

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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.