Home / 143,874,165.20-215,811,247.80-128,757,621.20

Finding the Fourth Proportional to 143,874,165.20, 215,811,247.80 and 128,757,621.20

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Solution

The fourth proportional to 143,874,165.20, 215,811,247.80 and 128,757,621.20 is: 193,136,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,874,165.20 : 215,811,247.80 = 128,757,621.20 : x
  2. Step 2: Convert to fraction form
    143,874,165.20/215,811,247.80 = 128,757,621.20/x
  3. Step 3: Cross multiply
    143,874,165.20x = 215,811,247.80 × 128,757,621.20
  4. Step 4: Simplify right side
    143,874,165.20x = 27,787,342,894,931,736
  5. Step 5: Solve for x
    x = 27,787,342,894,931,736/143,874,165.20
  6. Step 6: Final answer
    x = 193,136,431.80

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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.