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Finding the Fourth Proportional to 145,059.76, 217,414.68 and 74,900.80

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Solution

The fourth proportional to 145,059.76, 217,414.68 and 74,900.80 is: 112,260.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,059.76 : 217,414.68 = 74,900.80 : x
  2. Step 2: Convert to fraction form
    145,059.76/217,414.68 = 74,900.80/x
  3. Step 3: Cross multiply
    145,059.76x = 217,414.68 × 74,900.80
  4. Step 4: Simplify right side
    145,059.76x = 16,284,533,463.74
  5. Step 5: Solve for x
    x = 16,284,533,463.74/145,059.76
  6. Step 6: Final answer
    x = 112,260.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.