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Finding the Fourth Proportional to 112,928.52, 169,448.04 and 79,861.08

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Solution

The fourth proportional to 112,928.52, 169,448.04 and 79,861.08 is: 119,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,928.52 : 169,448.04 = 79,861.08 : x
  2. Step 2: Convert to fraction form
    112,928.52/169,448.04 = 79,861.08/x
  3. Step 3: Cross multiply
    112,928.52x = 169,448.04 × 79,861.08
  4. Step 4: Simplify right side
    112,928.52x = 13,532,303,478.28
  5. Step 5: Solve for x
    x = 13,532,303,478.28/112,928.52
  6. Step 6: Final answer
    x = 119,830.70

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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.