Home / 144,758,857.36-199,769,243.88-78,679,334.80

Finding the Fourth Proportional to 144,758,857.36, 199,769,243.88 and 78,679,334.80

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Solution

The fourth proportional to 144,758,857.36, 199,769,243.88 and 78,679,334.80 is: 108,578,580.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,758,857.36 : 199,769,243.88 = 78,679,334.80 : x
  2. Step 2: Convert to fraction form
    144,758,857.36/199,769,243.88 = 78,679,334.80/x
  3. Step 3: Cross multiply
    144,758,857.36x = 199,769,243.88 × 78,679,334.80
  4. Step 4: Simplify right side
    144,758,857.36x = 15,717,711,221,977,370
  5. Step 5: Solve for x
    x = 15,717,711,221,977,370/144,758,857.36
  6. Step 6: Final answer
    x = 108,578,580.33

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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.