Home / 108,540.18-149,790.05-63,210.86

Finding the Fourth Proportional to 108,540.18, 149,790.05 and 63,210.86

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Solution

The fourth proportional to 108,540.18, 149,790.05 and 63,210.86 is: 87,233.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,540.18 : 149,790.05 = 63,210.86 : x
  2. Step 2: Convert to fraction form
    108,540.18/149,790.05 = 63,210.86/x
  3. Step 3: Cross multiply
    108,540.18x = 149,790.05 × 63,210.86
  4. Step 4: Simplify right side
    108,540.18x = 9,468,357,879.94
  5. Step 5: Solve for x
    x = 9,468,357,879.94/108,540.18
  6. Step 6: Final answer
    x = 87,233.67

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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.