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Finding the Fourth Proportional to 210,161.41, 315,244.86 and 69,920.03

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Solution

The fourth proportional to 210,161.41, 315,244.86 and 69,920.03 is: 104,880.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,161.41 : 315,244.86 = 69,920.03 : x
  2. Step 2: Convert to fraction form
    210,161.41/315,244.86 = 69,920.03/x
  3. Step 3: Cross multiply
    210,161.41x = 315,244.86 × 69,920.03
  4. Step 4: Simplify right side
    210,161.41x = 22,041,930,068.55
  5. Step 5: Solve for x
    x = 22,041,930,068.55/210,161.41
  6. Step 6: Final answer
    x = 104,880.96

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1.5x scale

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.