Home / 143,136.64-197,522.58-79,470.64

Finding the Fourth Proportional to 143,136.64, 197,522.58 and 79,470.64

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Solution

The fourth proportional to 143,136.64, 197,522.58 and 79,470.64 is: 109,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,136.64 : 197,522.58 = 79,470.64 : x
  2. Step 2: Convert to fraction form
    143,136.64/197,522.58 = 79,470.64/x
  3. Step 3: Cross multiply
    143,136.64x = 197,522.58 × 79,470.64
  4. Step 4: Simplify right side
    143,136.64x = 15,697,245,847.05
  5. Step 5: Solve for x
    x = 15,697,245,847.05/143,136.64
  6. Step 6: Final answer
    x = 109,666.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.