Home / 91,267.15-136,631.16-67,416.33

Finding the Fourth Proportional to 91,267.15, 136,631.16 and 67,416.33

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Solution

The fourth proportional to 91,267.15, 136,631.16 and 67,416.33 is: 100,925.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,267.15 : 136,631.16 = 67,416.33 : x
  2. Step 2: Convert to fraction form
    91,267.15/136,631.16 = 67,416.33/x
  3. Step 3: Cross multiply
    91,267.15x = 136,631.16 × 67,416.33
  4. Step 4: Simplify right side
    91,267.15x = 9,211,171,370.84
  5. Step 5: Solve for x
    x = 9,211,171,370.84/91,267.15
  6. Step 6: Final answer
    x = 100,925.38

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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.