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Finding the Fourth Proportional to 144,530.60, 216,860.70 and 65,604.20

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Solution

The fourth proportional to 144,530.60, 216,860.70 and 65,604.20 is: 98,435.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,530.60 : 216,860.70 = 65,604.20 : x
  2. Step 2: Convert to fraction form
    144,530.60/216,860.70 = 65,604.20/x
  3. Step 3: Cross multiply
    144,530.60x = 216,860.70 × 65,604.20
  4. Step 4: Simplify right side
    144,530.60x = 14,226,972,734.94
  5. Step 5: Solve for x
    x = 14,226,972,734.94/144,530.60
  6. Step 6: Final answer
    x = 98,435.71

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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.