Home / 128,667,568.80-193,001,353.20-103,158,400.80

Finding the Fourth Proportional to 128,667,568.80, 193,001,353.20 and 103,158,400.80

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Solution

The fourth proportional to 128,667,568.80, 193,001,353.20 and 103,158,400.80 is: 154,737,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,667,568.80 : 193,001,353.20 = 103,158,400.80 : x
  2. Step 2: Convert to fraction form
    128,667,568.80/193,001,353.20 = 103,158,400.80/x
  3. Step 3: Cross multiply
    128,667,568.80x = 193,001,353.20 × 103,158,400.80
  4. Step 4: Simplify right side
    128,667,568.80x = 19,909,710,948,347,960
  5. Step 5: Solve for x
    x = 19,909,710,948,347,960/128,667,568.80
  6. Step 6: Final answer
    x = 154,737,601.20

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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.