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Finding the Fourth Proportional to 144,772.40, 217,081.80 and 51,281.20

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Solution

The fourth proportional to 144,772.40, 217,081.80 and 51,281.20 is: 76,894.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,772.40 : 217,081.80 = 51,281.20 : x
  2. Step 2: Convert to fraction form
    144,772.40/217,081.80 = 51,281.20/x
  3. Step 3: Cross multiply
    144,772.40x = 217,081.80 × 51,281.20
  4. Step 4: Simplify right side
    144,772.40x = 11,132,215,202.16
  5. Step 5: Solve for x
    x = 11,132,215,202.16/144,772.40
  6. Step 6: Final answer
    x = 76,894.60

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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.