Home / 128,333,917.20-192,500,875.80-99,668,470.80

Finding the Fourth Proportional to 128,333,917.20, 192,500,875.80 and 99,668,470.80

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Solution

The fourth proportional to 128,333,917.20, 192,500,875.80 and 99,668,470.80 is: 149,502,706.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,333,917.20 : 192,500,875.80 = 99,668,470.80 : x
  2. Step 2: Convert to fraction form
    128,333,917.20/192,500,875.80 = 99,668,470.80/x
  3. Step 3: Cross multiply
    128,333,917.20x = 192,500,875.80 × 99,668,470.80
  4. Step 4: Simplify right side
    128,333,917.20x = 19,186,267,918,646,728
  5. Step 5: Solve for x
    x = 19,186,267,918,646,728/128,333,917.20
  6. Step 6: Final answer
    x = 149,502,706.20

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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.