Home / 122,638.57-169,211.67-71,622.34

Finding the Fourth Proportional to 122,638.57, 169,211.67 and 71,622.34

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Solution

The fourth proportional to 122,638.57, 169,211.67 and 71,622.34 is: 98,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,638.57 : 169,211.67 = 71,622.34 : x
  2. Step 2: Convert to fraction form
    122,638.57/169,211.67 = 71,622.34/x
  3. Step 3: Cross multiply
    122,638.57x = 169,211.67 × 71,622.34
  4. Step 4: Simplify right side
    122,638.57x = 12,119,335,069.09
  5. Step 5: Solve for x
    x = 12,119,335,069.09/122,638.57
  6. Step 6: Final answer
    x = 98,821.56

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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.