Home / 128,897,955.36-193,345,039.76-31,853,660.64

Finding the Fourth Proportional to 128,897,955.36, 193,345,039.76 and 31,853,660.64

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Solution

The fourth proportional to 128,897,955.36, 193,345,039.76 and 31,853,660.64 is: 47,780,023.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,955.36 : 193,345,039.76 = 31,853,660.64 : x
  2. Step 2: Convert to fraction form
    128,897,955.36/193,345,039.76 = 31,853,660.64/x
  3. Step 3: Cross multiply
    128,897,955.36x = 193,345,039.76 × 31,853,660.64
  4. Step 4: Simplify right side
    128,897,955.36x = 6,158,747,282,942,347
  5. Step 5: Solve for x
    x = 6,158,747,282,942,347/128,897,955.36
  6. Step 6: Final answer
    x = 47,780,023.09

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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.