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Finding the Fourth Proportional to 145,611.88, 200,950.86 and 81,953.80

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Solution

The fourth proportional to 145,611.88, 200,950.86 and 81,953.80 is: 113,099.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,611.88 : 200,950.86 = 81,953.80 : x
  2. Step 2: Convert to fraction form
    145,611.88/200,950.86 = 81,953.80/x
  3. Step 3: Cross multiply
    145,611.88x = 200,950.86 × 81,953.80
  4. Step 4: Simplify right side
    145,611.88x = 16,468,686,590.27
  5. Step 5: Solve for x
    x = 16,468,686,590.27/145,611.88
  6. Step 6: Final answer
    x = 113,099.88

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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.