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Finding the Fourth Proportional to 115,059.85, 158,779.64 and 111,664.53

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Solution

The fourth proportional to 115,059.85, 158,779.64 and 111,664.53 is: 154,094.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,059.85 : 158,779.64 = 111,664.53 : x
  2. Step 2: Convert to fraction form
    115,059.85/158,779.64 = 111,664.53/x
  3. Step 3: Cross multiply
    115,059.85x = 158,779.64 × 111,664.53
  4. Step 4: Simplify right side
    115,059.85x = 17,730,054,153.33
  5. Step 5: Solve for x
    x = 17,730,054,153.33/115,059.85
  6. Step 6: Final answer
    x = 154,094.19

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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.