Home / 132,928.61-183,408.66-78,482.05

Finding the Fourth Proportional to 132,928.61, 183,408.66 and 78,482.05

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Solution

The fourth proportional to 132,928.61, 183,408.66 and 78,482.05 is: 108,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,928.61 : 183,408.66 = 78,482.05 : x
  2. Step 2: Convert to fraction form
    132,928.61/183,408.66 = 78,482.05/x
  3. Step 3: Cross multiply
    132,928.61x = 183,408.66 × 78,482.05
  4. Step 4: Simplify right side
    132,928.61x = 14,394,286,834.34
  5. Step 5: Solve for x
    x = 14,394,286,834.34/132,928.61
  6. Step 6: Final answer
    x = 108,285.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.