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Finding the Fourth Proportional to 145,592.92, 200,917.60 and 81,931.80

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Solution

The fourth proportional to 145,592.92, 200,917.60 and 81,931.80 is: 113,065.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,592.92 : 200,917.60 = 81,931.80 : x
  2. Step 2: Convert to fraction form
    145,592.92/200,917.60 = 81,931.80/x
  3. Step 3: Cross multiply
    145,592.92x = 200,917.60 × 81,931.80
  4. Step 4: Simplify right side
    145,592.92x = 16,461,540,619.68
  5. Step 5: Solve for x
    x = 16,461,540,619.68/145,592.92
  6. Step 6: Final answer
    x = 113,065.53

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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.