Home / 143,868,991.29-198,531,056.30-81,141,340.07

Finding the Fourth Proportional to 143,868,991.29, 198,531,056.30 and 81,141,340.07

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Solution

The fourth proportional to 143,868,991.29, 198,531,056.30 and 81,141,340.07 is: 111,970,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,868,991.29 : 198,531,056.30 = 81,141,340.07 : x
  2. Step 2: Convert to fraction form
    143,868,991.29/198,531,056.30 = 81,141,340.07/x
  3. Step 3: Cross multiply
    143,868,991.29x = 198,531,056.30 × 81,141,340.07
  4. Step 4: Simplify right side
    143,868,991.29x = 16,109,075,953,785,236
  5. Step 5: Solve for x
    x = 16,109,075,953,785,236/143,868,991.29
  6. Step 6: Final answer
    x = 111,970,451.80

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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.