Home / 128,333,916.20-192,500,874.30-99,668,469.80

Finding the Fourth Proportional to 128,333,916.20, 192,500,874.30 and 99,668,469.80

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Solution

The fourth proportional to 128,333,916.20, 192,500,874.30 and 99,668,469.80 is: 149,502,704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,333,916.20 : 192,500,874.30 = 99,668,469.80 : x
  2. Step 2: Convert to fraction form
    128,333,916.20/192,500,874.30 = 99,668,469.80/x
  3. Step 3: Cross multiply
    128,333,916.20x = 192,500,874.30 × 99,668,469.80
  4. Step 4: Simplify right side
    128,333,916.20x = 19,186,267,576,643,148
  5. Step 5: Solve for x
    x = 19,186,267,576,643,148/128,333,916.20
  6. Step 6: Final answer
    x = 149,502,704.70

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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.