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Finding the Fourth Proportional to 122,578.90, 169,157.87 and 68,862.77

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Solution

The fourth proportional to 122,578.90, 169,157.87 and 68,862.77 is: 95,030.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,578.90 : 169,157.87 = 68,862.77 : x
  2. Step 2: Convert to fraction form
    122,578.90/169,157.87 = 68,862.77/x
  3. Step 3: Cross multiply
    122,578.90x = 169,157.87 × 68,862.77
  4. Step 4: Simplify right side
    122,578.90x = 11,648,679,151.19
  5. Step 5: Solve for x
    x = 11,648,679,151.19/122,578.90
  6. Step 6: Final answer
    x = 95,030.06

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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.