Home / 108,420.11-149,550.32-86,961.34

Finding the Fourth Proportional to 108,420.11, 149,550.32 and 86,961.34

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Solution

The fourth proportional to 108,420.11, 149,550.32 and 86,961.34 is: 119,950.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,420.11 : 149,550.32 = 86,961.34 : x
  2. Step 2: Convert to fraction form
    108,420.11/149,550.32 = 86,961.34/x
  3. Step 3: Cross multiply
    108,420.11x = 149,550.32 × 86,961.34
  4. Step 4: Simplify right side
    108,420.11x = 13,005,096,224.63
  5. Step 5: Solve for x
    x = 13,005,096,224.63/108,420.11
  6. Step 6: Final answer
    x = 119,950.97

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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.