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Finding the Fourth Proportional to 118,143.26, 163,173.84 and 86,021.52

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Solution

The fourth proportional to 118,143.26, 163,173.84 and 86,021.52 is: 118,808.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,143.26 : 163,173.84 = 86,021.52 : x
  2. Step 2: Convert to fraction form
    118,143.26/163,173.84 = 86,021.52/x
  3. Step 3: Cross multiply
    118,143.26x = 163,173.84 × 86,021.52
  4. Step 4: Simplify right side
    118,143.26x = 14,036,461,741.04
  5. Step 5: Solve for x
    x = 14,036,461,741.04/118,143.26
  6. Step 6: Final answer
    x = 118,808.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.