Home / 106,513.65-159,618.23-78,211.64

Finding the Fourth Proportional to 106,513.65, 159,618.23 and 78,211.64

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Solution

The fourth proportional to 106,513.65, 159,618.23 and 78,211.64 is: 117,205.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,513.65 : 159,618.23 = 78,211.64 : x
  2. Step 2: Convert to fraction form
    106,513.65/159,618.23 = 78,211.64/x
  3. Step 3: Cross multiply
    106,513.65x = 159,618.23 × 78,211.64
  4. Step 4: Simplify right side
    106,513.65x = 12,484,003,542.20
  5. Step 5: Solve for x
    x = 12,484,003,542.20/106,513.65
  6. Step 6: Final answer
    x = 117,205.67

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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.