Home / 128,723,118.80-193,094,009.40-77,494,830.80

Finding the Fourth Proportional to 128,723,118.80, 193,094,009.40 and 77,494,830.80

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Solution

The fourth proportional to 128,723,118.80, 193,094,009.40 and 77,494,830.80 is: 116,247,863.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,723,118.80 : 193,094,009.40 = 77,494,830.80 : x
  2. Step 2: Convert to fraction form
    128,723,118.80/193,094,009.40 = 77,494,830.80/x
  3. Step 3: Cross multiply
    128,723,118.80x = 193,094,009.40 × 77,494,830.80
  4. Step 4: Simplify right side
    128,723,118.80x = 14,963,787,586,946,610
  5. Step 5: Solve for x
    x = 14,963,787,586,946,610/128,723,118.80
  6. Step 6: Final answer
    x = 116,247,863.84

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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.