Home / 109,193.58-163,817.56-86,788.80

Finding the Fourth Proportional to 109,193.58, 163,817.56 and 86,788.80

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Solution

The fourth proportional to 109,193.58, 163,817.56 and 86,788.80 is: 130,204.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,193.58 : 163,817.56 = 86,788.80 : x
  2. Step 2: Convert to fraction form
    109,193.58/163,817.56 = 86,788.80/x
  3. Step 3: Cross multiply
    109,193.58x = 163,817.56 × 86,788.80
  4. Step 4: Simplify right side
    109,193.58x = 14,217,529,803.91
  5. Step 5: Solve for x
    x = 14,217,529,803.91/109,193.58
  6. Step 6: Final answer
    x = 130,204.82

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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.