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Finding the Fourth Proportional to 118,477.25, 177,743.66 and 81,054.93

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Solution

The fourth proportional to 118,477.25, 177,743.66 and 81,054.93 is: 121,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,477.25 : 177,743.66 = 81,054.93 : x
  2. Step 2: Convert to fraction form
    118,477.25/177,743.66 = 81,054.93/x
  3. Step 3: Cross multiply
    118,477.25x = 177,743.66 × 81,054.93
  4. Step 4: Simplify right side
    118,477.25x = 14,406,999,919.24
  5. Step 5: Solve for x
    x = 14,406,999,919.24/118,477.25
  6. Step 6: Final answer
    x = 121,601.40

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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.