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Finding the Fourth Proportional to 145,221.99, 217,054.38 and 130,957.89

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Solution

The fourth proportional to 145,221.99, 217,054.38 and 130,957.89 is: 195,734.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,221.99 : 217,054.38 = 130,957.89 : x
  2. Step 2: Convert to fraction form
    145,221.99/217,054.38 = 130,957.89/x
  3. Step 3: Cross multiply
    145,221.99x = 217,054.38 × 130,957.89
  4. Step 4: Simplify right side
    145,221.99x = 28,424,983,620.06
  5. Step 5: Solve for x
    x = 28,424,983,620.06/145,221.99
  6. Step 6: Final answer
    x = 195,734.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.