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Finding the Fourth Proportional to 99,653.48, 137,520.90 and 54,941.48

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Solution

The fourth proportional to 99,653.48, 137,520.90 and 54,941.48 is: 75,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,653.48 : 137,520.90 = 54,941.48 : x
  2. Step 2: Convert to fraction form
    99,653.48/137,520.90 = 54,941.48/x
  3. Step 3: Cross multiply
    99,653.48x = 137,520.90 × 54,941.48
  4. Step 4: Simplify right side
    99,653.48x = 7,555,601,776.93
  5. Step 5: Solve for x
    x = 7,555,601,776.93/99,653.48
  6. Step 6: Final answer
    x = 75,818.74

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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.