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Finding the Fourth Proportional to 145,266.60, 217,899.90 and 103,276.20

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Solution

The fourth proportional to 145,266.60, 217,899.90 and 103,276.20 is: 154,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,266.60 : 217,899.90 = 103,276.20 : x
  2. Step 2: Convert to fraction form
    145,266.60/217,899.90 = 103,276.20/x
  3. Step 3: Cross multiply
    145,266.60x = 217,899.90 × 103,276.20
  4. Step 4: Simplify right side
    145,266.60x = 22,503,873,652.38
  5. Step 5: Solve for x
    x = 22,503,873,652.38/145,266.60
  6. Step 6: Final answer
    x = 154,914.30

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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.