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Finding the Fourth Proportional to 112,331.94, 168,497.91 and 77,164.98

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Solution

The fourth proportional to 112,331.94, 168,497.91 and 77,164.98 is: 115,747.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,331.94 : 168,497.91 = 77,164.98 : x
  2. Step 2: Convert to fraction form
    112,331.94/168,497.91 = 77,164.98/x
  3. Step 3: Cross multiply
    112,331.94x = 168,497.91 × 77,164.98
  4. Step 4: Simplify right side
    112,331.94x = 13,002,137,855.19
  5. Step 5: Solve for x
    x = 13,002,137,855.19/112,331.94
  6. Step 6: Final answer
    x = 115,747.47

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Similar ratio
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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.