Home / 90,771.40-136,210.38-38,176.84

Finding the Fourth Proportional to 90,771.40, 136,210.38 and 38,176.84

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Solution

The fourth proportional to 90,771.40, 136,210.38 and 38,176.84 is: 57,287.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,771.40 : 136,210.38 = 38,176.84 : x
  2. Step 2: Convert to fraction form
    90,771.40/136,210.38 = 38,176.84/x
  3. Step 3: Cross multiply
    90,771.40x = 136,210.38 × 38,176.84
  4. Step 4: Simplify right side
    90,771.40x = 5,200,081,883.60
  5. Step 5: Solve for x
    x = 5,200,081,883.60/90,771.40
  6. Step 6: Final answer
    x = 57,287.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.