Home / 108,949.65-150,368.39-90,771.59

Finding the Fourth Proportional to 108,949.65, 150,368.39 and 90,771.59

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Solution

The fourth proportional to 108,949.65, 150,368.39 and 90,771.59 is: 125,279.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,949.65 : 150,368.39 = 90,771.59 : x
  2. Step 2: Convert to fraction form
    108,949.65/150,368.39 = 90,771.59/x
  3. Step 3: Cross multiply
    108,949.65x = 150,368.39 × 90,771.59
  4. Step 4: Simplify right side
    108,949.65x = 13,649,176,640.34
  5. Step 5: Solve for x
    x = 13,649,176,640.34/108,949.65
  6. Step 6: Final answer
    x = 125,279.67

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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.