Home / 128,740,006.20-193,110,009.30-112,111,807.80

Finding the Fourth Proportional to 128,740,006.20, 193,110,009.30 and 112,111,807.80

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Solution

The fourth proportional to 128,740,006.20, 193,110,009.30 and 112,111,807.80 is: 168,167,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,740,006.20 : 193,110,009.30 = 112,111,807.80 : x
  2. Step 2: Convert to fraction form
    128,740,006.20/193,110,009.30 = 112,111,807.80/x
  3. Step 3: Cross multiply
    128,740,006.20x = 193,110,009.30 × 112,111,807.80
  4. Step 4: Simplify right side
    128,740,006.20x = 21,649,912,246,897,812
  5. Step 5: Solve for x
    x = 21,649,912,246,897,812/128,740,006.20
  6. Step 6: Final answer
    x = 168,167,711.70

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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.