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Finding the Fourth Proportional to 243,618.06, 365,402.10 and 66,143

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Solution

The fourth proportional to 243,618.06, 365,402.10 and 66,143 is: 99,207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,618.06 : 365,402.10 = 66,143 : x
  2. Step 2: Convert to fraction form
    243,618.06/365,402.10 = 66,143/x
  3. Step 3: Cross multiply
    243,618.06x = 365,402.10 × 66,143
  4. Step 4: Simplify right side
    243,618.06x = 24,168,791,100.30
  5. Step 5: Solve for x
    x = 24,168,791,100.30/243,618.06
  6. Step 6: Final answer
    x = 99,207.72

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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.