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Finding the Fourth Proportional to 116,878.80, 161,292.36 and 66,586.32

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Solution

The fourth proportional to 116,878.80, 161,292.36 and 66,586.32 is: 91,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,878.80 : 161,292.36 = 66,586.32 : x
  2. Step 2: Convert to fraction form
    116,878.80/161,292.36 = 66,586.32/x
  3. Step 3: Cross multiply
    116,878.80x = 161,292.36 × 66,586.32
  4. Step 4: Simplify right side
    116,878.80x = 10,739,864,696.52
  5. Step 5: Solve for x
    x = 10,739,864,696.52/116,878.80
  6. Step 6: Final answer
    x = 91,888.90

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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.