Home / 196,128,438.40-294,192,657.60-128,103,990.40

Finding the Fourth Proportional to 196,128,438.40, 294,192,657.60 and 128,103,990.40

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Solution

The fourth proportional to 196,128,438.40, 294,192,657.60 and 128,103,990.40 is: 192,155,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,128,438.40 : 294,192,657.60 = 128,103,990.40 : x
  2. Step 2: Convert to fraction form
    196,128,438.40/294,192,657.60 = 128,103,990.40/x
  3. Step 3: Cross multiply
    196,128,438.40x = 294,192,657.60 × 128,103,990.40
  4. Step 4: Simplify right side
    196,128,438.40x = 37,687,253,384,940,888
  5. Step 5: Solve for x
    x = 37,687,253,384,940,888/196,128,438.40
  6. Step 6: Final answer
    x = 192,155,985.60

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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.