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Finding the Fourth Proportional to 145,280.16, 200,499.60 and 81,633.60

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Solution

The fourth proportional to 145,280.16, 200,499.60 and 81,633.60 is: 112,661.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,280.16 : 200,499.60 = 81,633.60 : x
  2. Step 2: Convert to fraction form
    145,280.16/200,499.60 = 81,633.60/x
  3. Step 3: Cross multiply
    145,280.16x = 200,499.60 × 81,633.60
  4. Step 4: Simplify right side
    145,280.16x = 16,367,504,146.56
  5. Step 5: Solve for x
    x = 16,367,504,146.56/145,280.16
  6. Step 6: Final answer
    x = 112,661.66

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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.