Home / 151,791.96-209,457-88,117.32

Finding the Fourth Proportional to 151,791.96, 209,457 and 88,117.32

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Solution

The fourth proportional to 151,791.96, 209,457 and 88,117.32 is: 121,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,791.96 : 209,457 = 88,117.32 : x
  2. Step 2: Convert to fraction form
    151,791.96/209,457 = 88,117.32/x
  3. Step 3: Cross multiply
    151,791.96x = 209,457 × 88,117.32
  4. Step 4: Simplify right side
    151,791.96x = 18,456,789,495.24
  5. Step 5: Solve for x
    x = 18,456,789,495.24/151,791.96
  6. Step 6: Final answer
    x = 121,592.67

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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.