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Finding the Fourth Proportional to 122,615.34, 169,214.13 and 68,900.19

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Solution

The fourth proportional to 122,615.34, 169,214.13 and 68,900.19 is: 95,085.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,615.34 : 169,214.13 = 68,900.19 : x
  2. Step 2: Convert to fraction form
    122,615.34/169,214.13 = 68,900.19/x
  3. Step 3: Cross multiply
    122,615.34x = 169,214.13 × 68,900.19
  4. Step 4: Simplify right side
    122,615.34x = 11,658,885,707.68
  5. Step 5: Solve for x
    x = 11,658,885,707.68/122,615.34
  6. Step 6: Final answer
    x = 95,085.05

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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.