Home / 108,927.60-163,391.40-91,431.60

Finding the Fourth Proportional to 108,927.60, 163,391.40 and 91,431.60

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Solution

The fourth proportional to 108,927.60, 163,391.40 and 91,431.60 is: 137,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,927.60 : 163,391.40 = 91,431.60 : x
  2. Step 2: Convert to fraction form
    108,927.60/163,391.40 = 91,431.60/x
  3. Step 3: Cross multiply
    108,927.60x = 163,391.40 × 91,431.60
  4. Step 4: Simplify right side
    108,927.60x = 14,939,137,128.24
  5. Step 5: Solve for x
    x = 14,939,137,128.24/108,927.60
  6. Step 6: Final answer
    x = 137,147.40

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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.