Home / 131,362,721.20-197,044,081.80-82,989,780.40

Finding the Fourth Proportional to 131,362,721.20, 197,044,081.80 and 82,989,780.40

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Solution

The fourth proportional to 131,362,721.20, 197,044,081.80 and 82,989,780.40 is: 124,484,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,362,721.20 : 197,044,081.80 = 82,989,780.40 : x
  2. Step 2: Convert to fraction form
    131,362,721.20/197,044,081.80 = 82,989,780.40/x
  3. Step 3: Cross multiply
    131,362,721.20x = 197,044,081.80 × 82,989,780.40
  4. Step 4: Simplify right side
    131,362,721.20x = 16,352,645,077,701,638
  5. Step 5: Solve for x
    x = 16,352,645,077,701,638/131,362,721.20
  6. Step 6: Final answer
    x = 124,484,670.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.