Home / 138,741,985.20-191,448,491.18-76,846,823.40

Finding the Fourth Proportional to 138,741,985.20, 191,448,491.18 and 76,846,823.40

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Solution

The fourth proportional to 138,741,985.20, 191,448,491.18 and 76,846,823.40 is: 106,040,059.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,741,985.20 : 191,448,491.18 = 76,846,823.40 : x
  2. Step 2: Convert to fraction form
    138,741,985.20/191,448,491.18 = 76,846,823.40/x
  3. Step 3: Cross multiply
    138,741,985.20x = 191,448,491.18 × 76,846,823.40
  4. Step 4: Simplify right side
    138,741,985.20x = 14,712,208,391,905,920
  5. Step 5: Solve for x
    x = 14,712,208,391,905,920/138,741,985.20
  6. Step 6: Final answer
    x = 106,040,059.69

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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.