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Finding the Fourth Proportional to 122,182.99, 168,612.30 and 74,436.32

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Solution

The fourth proportional to 122,182.99, 168,612.30 and 74,436.32 is: 102,721.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,182.99 : 168,612.30 = 74,436.32 : x
  2. Step 2: Convert to fraction form
    122,182.99/168,612.30 = 74,436.32/x
  3. Step 3: Cross multiply
    122,182.99x = 168,612.30 × 74,436.32
  4. Step 4: Simplify right side
    122,182.99x = 12,550,879,118.74
  5. Step 5: Solve for x
    x = 12,550,879,118.74/122,182.99
  6. Step 6: Final answer
    x = 102,721.98

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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.