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Finding the Fourth Proportional to 145,852.70, 218,728.45 and 51,080.79

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Solution

The fourth proportional to 145,852.70, 218,728.45 and 51,080.79 is: 76,603.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,852.70 : 218,728.45 = 51,080.79 : x
  2. Step 2: Convert to fraction form
    145,852.70/218,728.45 = 51,080.79/x
  3. Step 3: Cross multiply
    145,852.70x = 218,728.45 × 51,080.79
  4. Step 4: Simplify right side
    145,852.70x = 11,172,822,905.56
  5. Step 5: Solve for x
    x = 11,172,822,905.56/145,852.70
  6. Step 6: Final answer
    x = 76,603.47

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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.