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Finding the Fourth Proportional to 122,842.34, 169,520.42 and 69,127.32

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Solution

The fourth proportional to 122,842.34, 169,520.42 and 69,127.32 is: 95,394.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,842.34 : 169,520.42 = 69,127.32 : x
  2. Step 2: Convert to fraction form
    122,842.34/169,520.42 = 69,127.32/x
  3. Step 3: Cross multiply
    122,842.34x = 169,520.42 × 69,127.32
  4. Step 4: Simplify right side
    122,842.34x = 11,718,492,319.87
  5. Step 5: Solve for x
    x = 11,718,492,319.87/122,842.34
  6. Step 6: Final answer
    x = 95,394.57

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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.