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Finding the Fourth Proportional to 207,254.60, 310,881.90 and 74,126.78

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Solution

The fourth proportional to 207,254.60, 310,881.90 and 74,126.78 is: 111,190.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,254.60 : 310,881.90 = 74,126.78 : x
  2. Step 2: Convert to fraction form
    207,254.60/310,881.90 = 74,126.78/x
  3. Step 3: Cross multiply
    207,254.60x = 310,881.90 × 74,126.78
  4. Step 4: Simplify right side
    207,254.60x = 23,044,674,207.28
  5. Step 5: Solve for x
    x = 23,044,674,207.28/207,254.60
  6. Step 6: Final answer
    x = 111,190.17

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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.