Home / 145,216,178.10-200,398,367.52-79,136,694.54

Finding the Fourth Proportional to 145,216,178.10, 200,398,367.52 and 79,136,694.54

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Solution

The fourth proportional to 145,216,178.10, 200,398,367.52 and 79,136,694.54 is: 109,208,661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,216,178.10 : 200,398,367.52 = 79,136,694.54 : x
  2. Step 2: Convert to fraction form
    145,216,178.10/200,398,367.52 = 79,136,694.54/x
  3. Step 3: Cross multiply
    145,216,178.10x = 200,398,367.52 × 79,136,694.54
  4. Step 4: Simplify right side
    145,216,178.10x = 15,858,864,396,744,900
  5. Step 5: Solve for x
    x = 15,858,864,396,744,900/145,216,178.10
  6. Step 6: Final answer
    x = 109,208,661.21

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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.