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Finding the Fourth Proportional to 118,476.37, 177,742.34 and 81,054.06

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Solution

The fourth proportional to 118,476.37, 177,742.34 and 81,054.06 is: 121,600.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,476.37 : 177,742.34 = 81,054.06 : x
  2. Step 2: Convert to fraction form
    118,476.37/177,742.34 = 81,054.06/x
  3. Step 3: Cross multiply
    118,476.37x = 177,742.34 × 81,054.06
  4. Step 4: Simplify right side
    118,476.37x = 14,406,738,290.90
  5. Step 5: Solve for x
    x = 14,406,738,290.90/118,476.37
  6. Step 6: Final answer
    x = 121,600.10

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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.