Home / 136,909.70-205,438.07-57,002.83

Finding the Fourth Proportional to 136,909.70, 205,438.07 and 57,002.83

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Solution

The fourth proportional to 136,909.70, 205,438.07 and 57,002.83 is: 85,534.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,909.70 : 205,438.07 = 57,002.83 : x
  2. Step 2: Convert to fraction form
    136,909.70/205,438.07 = 57,002.83/x
  3. Step 3: Cross multiply
    136,909.70x = 205,438.07 × 57,002.83
  4. Step 4: Simplify right side
    136,909.70x = 11,710,551,379.74
  5. Step 5: Solve for x
    x = 11,710,551,379.74/136,909.70
  6. Step 6: Final answer
    x = 85,534.86

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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.