Home / 108,816.30-163,051.65-91,190.70

Finding the Fourth Proportional to 108,816.30, 163,051.65 and 91,190.70

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Solution

The fourth proportional to 108,816.30, 163,051.65 and 91,190.70 is: 136,641.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,816.30 : 163,051.65 = 91,190.70 : x
  2. Step 2: Convert to fraction form
    108,816.30/163,051.65 = 91,190.70/x
  3. Step 3: Cross multiply
    108,816.30x = 163,051.65 × 91,190.70
  4. Step 4: Simplify right side
    108,816.30x = 14,868,794,099.66
  5. Step 5: Solve for x
    x = 14,868,794,099.66/108,816.30
  6. Step 6: Final answer
    x = 136,641.24

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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.