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Finding the Fourth Proportional to 158,333.08, 218,499.99 and 85,736.77

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Solution

The fourth proportional to 158,333.08, 218,499.99 and 85,736.77 is: 118,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,333.08 : 218,499.99 = 85,736.77 : x
  2. Step 2: Convert to fraction form
    158,333.08/218,499.99 = 85,736.77/x
  3. Step 3: Cross multiply
    158,333.08x = 218,499.99 × 85,736.77
  4. Step 4: Simplify right side
    158,333.08x = 18,733,483,387.63
  5. Step 5: Solve for x
    x = 18,733,483,387.63/158,333.08
  6. Step 6: Final answer
    x = 118,316.93

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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.