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Finding the Fourth Proportional to 122,574.67, 169,149.13 and 68,126.57

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Solution

The fourth proportional to 122,574.67, 169,149.13 and 68,126.57 is: 94,012.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,574.67 : 169,149.13 = 68,126.57 : x
  2. Step 2: Convert to fraction form
    122,574.67/169,149.13 = 68,126.57/x
  3. Step 3: Cross multiply
    122,574.67x = 169,149.13 × 68,126.57
  4. Step 4: Simplify right side
    122,574.67x = 11,523,549,663.63
  5. Step 5: Solve for x
    x = 11,523,549,663.63/122,574.67
  6. Step 6: Final answer
    x = 94,012.49

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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.