Home / 122,348,005.20-183,522,007.80-85,997,440.80

Finding the Fourth Proportional to 122,348,005.20, 183,522,007.80 and 85,997,440.80

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Solution

The fourth proportional to 122,348,005.20, 183,522,007.80 and 85,997,440.80 is: 128,996,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,348,005.20 : 183,522,007.80 = 85,997,440.80 : x
  2. Step 2: Convert to fraction form
    122,348,005.20/183,522,007.80 = 85,997,440.80/x
  3. Step 3: Cross multiply
    122,348,005.20x = 183,522,007.80 × 85,997,440.80
  4. Step 4: Simplify right side
    122,348,005.20x = 15,782,423,001,277,638
  5. Step 5: Solve for x
    x = 15,782,423,001,277,638/122,348,005.20
  6. Step 6: Final answer
    x = 128,996,161.20

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1.5x scale

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.