Home / 113,778.34-170,815.35-87,501.70

Finding the Fourth Proportional to 113,778.34, 170,815.35 and 87,501.70

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Solution

The fourth proportional to 113,778.34, 170,815.35 and 87,501.70 is: 131,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,778.34 : 170,815.35 = 87,501.70 : x
  2. Step 2: Convert to fraction form
    113,778.34/170,815.35 = 87,501.70/x
  3. Step 3: Cross multiply
    113,778.34x = 170,815.35 × 87,501.70
  4. Step 4: Simplify right side
    113,778.34x = 14,946,633,511.10
  5. Step 5: Solve for x
    x = 14,946,633,511.10/113,778.34
  6. Step 6: Final answer
    x = 131,366.25

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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.