Home / 90,783.40-136,228.38-38,188.84

Finding the Fourth Proportional to 90,783.40, 136,228.38 and 38,188.84

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Solution

The fourth proportional to 90,783.40, 136,228.38 and 38,188.84 is: 57,305.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,783.40 : 136,228.38 = 38,188.84 : x
  2. Step 2: Convert to fraction form
    90,783.40/136,228.38 = 38,188.84/x
  3. Step 3: Cross multiply
    90,783.40x = 136,228.38 × 38,188.84
  4. Step 4: Simplify right side
    90,783.40x = 5,202,403,807.28
  5. Step 5: Solve for x
    x = 5,202,403,807.28/90,783.40
  6. Step 6: Final answer
    x = 57,305.67

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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.