Home / 132,721.60-183,193.44-87,432.64

Finding the Fourth Proportional to 132,721.60, 183,193.44 and 87,432.64

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Solution

The fourth proportional to 132,721.60, 183,193.44 and 87,432.64 is: 120,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,721.60 : 183,193.44 = 87,432.64 : x
  2. Step 2: Convert to fraction form
    132,721.60/183,193.44 = 87,432.64/x
  3. Step 3: Cross multiply
    132,721.60x = 183,193.44 × 87,432.64
  4. Step 4: Simplify right side
    132,721.60x = 16,017,086,089.88
  5. Step 5: Solve for x
    x = 16,017,086,089.88/132,721.60
  6. Step 6: Final answer
    x = 120,681.83

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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.