Home / 138,611,761.88-191,285,743.04-76,733,133.80

Finding the Fourth Proportional to 138,611,761.88, 191,285,743.04 and 76,733,133.80

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Solution

The fourth proportional to 138,611,761.88, 191,285,743.04 and 76,733,133.80 is: 105,892,561.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,611,761.88 : 191,285,743.04 = 76,733,133.80 : x
  2. Step 2: Convert to fraction form
    138,611,761.88/191,285,743.04 = 76,733,133.80/x
  3. Step 3: Cross multiply
    138,611,761.88x = 191,285,743.04 × 76,733,133.80
  4. Step 4: Simplify right side
    138,611,761.88x = 14,677,954,514,720,738
  5. Step 5: Solve for x
    x = 14,677,954,514,720,738/138,611,761.88
  6. Step 6: Final answer
    x = 105,892,561.47

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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.