Home / 131,328,051.20-196,992,076.80-128,640,665.60

Finding the Fourth Proportional to 131,328,051.20, 196,992,076.80 and 128,640,665.60

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Solution

The fourth proportional to 131,328,051.20, 196,992,076.80 and 128,640,665.60 is: 192,960,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,328,051.20 : 196,992,076.80 = 128,640,665.60 : x
  2. Step 2: Convert to fraction form
    131,328,051.20/196,992,076.80 = 128,640,665.60/x
  3. Step 3: Cross multiply
    131,328,051.20x = 196,992,076.80 × 128,640,665.60
  4. Step 4: Simplify right side
    131,328,051.20x = 25,341,191,877,478,320
  5. Step 5: Solve for x
    x = 25,341,191,877,478,320/131,328,051.20
  6. Step 6: Final answer
    x = 192,960,998.40

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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.