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Finding the Fourth Proportional to 122,359.92, 168,677.94 and 86,486.64

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Solution

The fourth proportional to 122,359.92, 168,677.94 and 86,486.64 is: 119,225.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,359.92 : 168,677.94 = 86,486.64 : x
  2. Step 2: Convert to fraction form
    122,359.92/168,677.94 = 86,486.64/x
  3. Step 3: Cross multiply
    122,359.92x = 168,677.94 × 86,486.64
  4. Step 4: Simplify right side
    122,359.92x = 14,588,388,272.72
  5. Step 5: Solve for x
    x = 14,588,388,272.72/122,359.92
  6. Step 6: Final answer
    x = 119,225.22

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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.