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Finding the Fourth Proportional to 145,729.25, 218,602.65 and 45,892.70

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Solution

The fourth proportional to 145,729.25, 218,602.65 and 45,892.70 is: 68,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,729.25 : 218,602.65 = 45,892.70 : x
  2. Step 2: Convert to fraction form
    145,729.25/218,602.65 = 45,892.70/x
  3. Step 3: Cross multiply
    145,729.25x = 218,602.65 × 45,892.70
  4. Step 4: Simplify right side
    145,729.25x = 10,032,265,835.66
  5. Step 5: Solve for x
    x = 10,032,265,835.66/145,729.25
  6. Step 6: Final answer
    x = 68,841.81

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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.