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Finding the Fourth Proportional to 145,877.70, 218,729.04 and 66,892.98

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Solution

The fourth proportional to 145,877.70, 218,729.04 and 66,892.98 is: 100,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,877.70 : 218,729.04 = 66,892.98 : x
  2. Step 2: Convert to fraction form
    145,877.70/218,729.04 = 66,892.98/x
  3. Step 3: Cross multiply
    145,877.70x = 218,729.04 × 66,892.98
  4. Step 4: Simplify right side
    145,877.70x = 14,631,437,298.14
  5. Step 5: Solve for x
    x = 14,631,437,298.14/145,877.70
  6. Step 6: Final answer
    x = 100,299.34

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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.