Home / 108,558.28-163,086.90-77,046.58

Finding the Fourth Proportional to 108,558.28, 163,086.90 and 77,046.58

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Solution

The fourth proportional to 108,558.28, 163,086.90 and 77,046.58 is: 115,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,558.28 : 163,086.90 = 77,046.58 : x
  2. Step 2: Convert to fraction form
    108,558.28/163,086.90 = 77,046.58/x
  3. Step 3: Cross multiply
    108,558.28x = 163,086.90 × 77,046.58
  4. Step 4: Simplify right side
    108,558.28x = 12,565,287,887.80
  5. Step 5: Solve for x
    x = 12,565,287,887.80/108,558.28
  6. Step 6: Final answer
    x = 115,746.93

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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.