Home / 131,328,951.20-196,993,426.80-76,909,392.80

Finding the Fourth Proportional to 131,328,951.20, 196,993,426.80 and 76,909,392.80

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Solution

The fourth proportional to 131,328,951.20, 196,993,426.80 and 76,909,392.80 is: 115,364,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,328,951.20 : 196,993,426.80 = 76,909,392.80 : x
  2. Step 2: Convert to fraction form
    131,328,951.20/196,993,426.80 = 76,909,392.80/x
  3. Step 3: Cross multiply
    131,328,951.20x = 196,993,426.80 × 76,909,392.80
  4. Step 4: Simplify right side
    131,328,951.20x = 15,150,644,840,779,248
  5. Step 5: Solve for x
    x = 15,150,644,840,779,248/131,328,951.20
  6. Step 6: Final answer
    x = 115,364,089.20

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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.