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Finding the Fourth Proportional to 112,216.64, 168,211.20 and 72,798.88

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Solution

The fourth proportional to 112,216.64, 168,211.20 and 72,798.88 is: 109,124.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,216.64 : 168,211.20 = 72,798.88 : x
  2. Step 2: Convert to fraction form
    112,216.64/168,211.20 = 72,798.88/x
  3. Step 3: Cross multiply
    112,216.64x = 168,211.20 × 72,798.88
  4. Step 4: Simplify right side
    112,216.64x = 12,245,586,963.46
  5. Step 5: Solve for x
    x = 12,245,586,963.46/112,216.64
  6. Step 6: Final answer
    x = 109,124.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.