Home / 123,355.20-170,233.20-69,641.28

Finding the Fourth Proportional to 123,355.20, 170,233.20 and 69,641.28

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Solution

The fourth proportional to 123,355.20, 170,233.20 and 69,641.28 is: 96,106.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,355.20 : 170,233.20 = 69,641.28 : x
  2. Step 2: Convert to fraction form
    123,355.20/170,233.20 = 69,641.28/x
  3. Step 3: Cross multiply
    123,355.20x = 170,233.20 × 69,641.28
  4. Step 4: Simplify right side
    123,355.20x = 11,855,257,946.50
  5. Step 5: Solve for x
    x = 11,855,257,946.50/123,355.20
  6. Step 6: Final answer
    x = 96,106.67

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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.