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Finding the Fourth Proportional to 145,218.99, 217,049.91 and 130,954.89

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Solution

The fourth proportional to 145,218.99, 217,049.91 and 130,954.89 is: 195,730.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,218.99 : 217,049.91 = 130,954.89 : x
  2. Step 2: Convert to fraction form
    145,218.99/217,049.91 = 130,954.89/x
  3. Step 3: Cross multiply
    145,218.99x = 217,049.91 × 130,954.89
  4. Step 4: Simplify right side
    145,218.99x = 28,423,747,088.56
  5. Step 5: Solve for x
    x = 28,423,747,088.56/145,218.99
  6. Step 6: Final answer
    x = 195,730.24

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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.