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Finding the Fourth Proportional to 146,998.60, 220,497.90 and 76,899.40

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Solution

The fourth proportional to 146,998.60, 220,497.90 and 76,899.40 is: 115,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,998.60 : 220,497.90 = 76,899.40 : x
  2. Step 2: Convert to fraction form
    146,998.60/220,497.90 = 76,899.40/x
  3. Step 3: Cross multiply
    146,998.60x = 220,497.90 × 76,899.40
  4. Step 4: Simplify right side
    146,998.60x = 16,956,156,211.26
  5. Step 5: Solve for x
    x = 16,956,156,211.26/146,998.60
  6. Step 6: Final answer
    x = 115,349.10

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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.