Home / 201,498,356.62-302,246,520.40-78,689,144.91

Finding the Fourth Proportional to 201,498,356.62, 302,246,520.40 and 78,689,144.91

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Solution

The fourth proportional to 201,498,356.62, 302,246,520.40 and 78,689,144.91 is: 118,033,321.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,498,356.62 : 302,246,520.40 = 78,689,144.91 : x
  2. Step 2: Convert to fraction form
    201,498,356.62/302,246,520.40 = 78,689,144.91/x
  3. Step 3: Cross multiply
    201,498,356.62x = 302,246,520.40 × 78,689,144.91
  4. Step 4: Simplify right side
    201,498,356.62x = 23,783,520,242,298,868
  5. Step 5: Solve for x
    x = 23,783,520,242,298,868/201,498,356.62
  6. Step 6: Final answer
    x = 118,033,321.17

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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.