Home / 131,275,145.60-197,090,011.20-76,743,612.80

Finding the Fourth Proportional to 131,275,145.60, 197,090,011.20 and 76,743,612.80

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Solution

The fourth proportional to 131,275,145.60, 197,090,011.20 and 76,743,612.80 is: 115,219,064.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,275,145.60 : 197,090,011.20 = 76,743,612.80 : x
  2. Step 2: Convert to fraction form
    131,275,145.60/197,090,011.20 = 76,743,612.80/x
  3. Step 3: Cross multiply
    131,275,145.60x = 197,090,011.20 × 76,743,612.80
  4. Step 4: Simplify right side
    131,275,145.60x = 15,125,399,506,280,462
  5. Step 5: Solve for x
    x = 15,125,399,506,280,462/131,275,145.60
  6. Step 6: Final answer
    x = 115,219,064.79

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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.