Home / 138,700,376.54-191,333,950.81-85,760,161.68

Finding the Fourth Proportional to 138,700,376.54, 191,333,950.81 and 85,760,161.68

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Solution

The fourth proportional to 138,700,376.54, 191,333,950.81 and 85,760,161.68 is: 118,304,152.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,700,376.54 : 191,333,950.81 = 85,760,161.68 : x
  2. Step 2: Convert to fraction form
    138,700,376.54/191,333,950.81 = 85,760,161.68/x
  3. Step 3: Cross multiply
    138,700,376.54x = 191,333,950.81 × 85,760,161.68
  4. Step 4: Simplify right side
    138,700,376.54x = 16,408,830,555,765,614
  5. Step 5: Solve for x
    x = 16,408,830,555,765,614/138,700,376.54
  6. Step 6: Final answer
    x = 118,304,152.91

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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.