Home / 99,756.15-137,658.62-54,431.43

Finding the Fourth Proportional to 99,756.15, 137,658.62 and 54,431.43

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Solution

The fourth proportional to 99,756.15, 137,658.62 and 54,431.43 is: 75,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,756.15 : 137,658.62 = 54,431.43 : x
  2. Step 2: Convert to fraction form
    99,756.15/137,658.62 = 54,431.43/x
  3. Step 3: Cross multiply
    99,756.15x = 137,658.62 × 54,431.43
  4. Step 4: Simplify right side
    99,756.15x = 7,492,955,266.27
  5. Step 5: Solve for x
    x = 7,492,955,266.27/99,756.15
  6. Step 6: Final answer
    x = 75,112.72

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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.