Home / 128,889,739.60-193,166,647.80-52,149,950.80

Finding the Fourth Proportional to 128,889,739.60, 193,166,647.80 and 52,149,950.80

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Solution

The fourth proportional to 128,889,739.60, 193,166,647.80 and 52,149,950.80 is: 78,156,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,889,739.60 : 193,166,647.80 = 52,149,950.80 : x
  2. Step 2: Convert to fraction form
    128,889,739.60/193,166,647.80 = 52,149,950.80/x
  3. Step 3: Cross multiply
    128,889,739.60x = 193,166,647.80 × 52,149,950.80
  4. Step 4: Simplify right side
    128,889,739.60x = 10,073,631,178,970,928
  5. Step 5: Solve for x
    x = 10,073,631,178,970,928/128,889,739.60
  6. Step 6: Final answer
    x = 78,156,967.42

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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.