Home / 143,635,909.60-198,218,823.60-81,760,232.80

Finding the Fourth Proportional to 143,635,909.60, 198,218,823.60 and 81,760,232.80

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Solution

The fourth proportional to 143,635,909.60, 198,218,823.60 and 81,760,232.80 is: 112,829,843.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,635,909.60 : 198,218,823.60 = 81,760,232.80 : x
  2. Step 2: Convert to fraction form
    143,635,909.60/198,218,823.60 = 81,760,232.80/x
  3. Step 3: Cross multiply
    143,635,909.60x = 198,218,823.60 × 81,760,232.80
  4. Step 4: Simplify right side
    143,635,909.60x = 16,206,417,162,878,134
  5. Step 5: Solve for x
    x = 16,206,417,162,878,134/143,635,909.60
  6. Step 6: Final answer
    x = 112,829,843.23

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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.