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Finding the Fourth Proportional to 122,356.15, 168,852.64 and 68,642.32

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Solution

The fourth proportional to 122,356.15, 168,852.64 and 68,642.32 is: 94,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,356.15 : 168,852.64 = 68,642.32 : x
  2. Step 2: Convert to fraction form
    122,356.15/168,852.64 = 68,642.32/x
  3. Step 3: Cross multiply
    122,356.15x = 168,852.64 × 68,642.32
  4. Step 4: Simplify right side
    122,356.15x = 11,590,436,947.72
  5. Step 5: Solve for x
    x = 11,590,436,947.72/122,356.15
  6. Step 6: Final answer
    x = 94,727.05

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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.