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Finding the Fourth Proportional to 123,965.72, 171,072.03 and 70,260.90

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Solution

The fourth proportional to 123,965.72, 171,072.03 and 70,260.90 is: 96,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,965.72 : 171,072.03 = 70,260.90 : x
  2. Step 2: Convert to fraction form
    123,965.72/171,072.03 = 70,260.90/x
  3. Step 3: Cross multiply
    123,965.72x = 171,072.03 × 70,260.90
  4. Step 4: Simplify right side
    123,965.72x = 12,019,674,792.63
  5. Step 5: Solve for x
    x = 12,019,674,792.63/123,965.72
  6. Step 6: Final answer
    x = 96,959.67

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1.5x scale

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.