Home / 145,269.12-200,491.56-81,611.76

Finding the Fourth Proportional to 145,269.12, 200,491.56 and 81,611.76

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Solution

The fourth proportional to 145,269.12, 200,491.56 and 81,611.76 is: 112,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,269.12 : 200,491.56 = 81,611.76 : x
  2. Step 2: Convert to fraction form
    145,269.12/200,491.56 = 81,611.76/x
  3. Step 3: Cross multiply
    145,269.12x = 200,491.56 × 81,611.76
  4. Step 4: Simplify right side
    145,269.12x = 16,362,469,076.75
  5. Step 5: Solve for x
    x = 16,362,469,076.75/145,269.12
  6. Step 6: Final answer
    x = 112,635.56

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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.