Home / 108,228.19-149,258.21-67,945.71

Finding the Fourth Proportional to 108,228.19, 149,258.21 and 67,945.71

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Solution

The fourth proportional to 108,228.19, 149,258.21 and 67,945.71 is: 93,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,228.19 : 149,258.21 = 67,945.71 : x
  2. Step 2: Convert to fraction form
    108,228.19/149,258.21 = 67,945.71/x
  3. Step 3: Cross multiply
    108,228.19x = 149,258.21 × 67,945.71
  4. Step 4: Simplify right side
    108,228.19x = 10,141,455,051.78
  5. Step 5: Solve for x
    x = 10,141,455,051.78/108,228.19
  6. Step 6: Final answer
    x = 93,704.38

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Double scale
Find fourth proportional to 108,229.19, 149,259.59 and 67,946.71
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1.5x scale

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.