Home / 108,083.12-149,081.88-93,911.60

Finding the Fourth Proportional to 108,083.12, 149,081.88 and 93,911.60

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Solution

The fourth proportional to 108,083.12, 149,081.88 and 93,911.60 is: 129,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,083.12 : 149,081.88 = 93,911.60 : x
  2. Step 2: Convert to fraction form
    108,083.12/149,081.88 = 93,911.60/x
  3. Step 3: Cross multiply
    108,083.12x = 149,081.88 × 93,911.60
  4. Step 4: Simplify right side
    108,083.12x = 14,000,517,881.81
  5. Step 5: Solve for x
    x = 14,000,517,881.81/108,083.12
  6. Step 6: Final answer
    x = 129,534.73

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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.