Home / 190,389.36-262,733.40-105,505.68

Finding the Fourth Proportional to 190,389.36, 262,733.40 and 105,505.68

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Solution

The fourth proportional to 190,389.36, 262,733.40 and 105,505.68 is: 145,595.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,389.36 : 262,733.40 = 105,505.68 : x
  2. Step 2: Convert to fraction form
    190,389.36/262,733.40 = 105,505.68/x
  3. Step 3: Cross multiply
    190,389.36x = 262,733.40 × 105,505.68
  4. Step 4: Simplify right side
    190,389.36x = 27,719,866,025.71
  5. Step 5: Solve for x
    x = 27,719,866,025.71/190,389.36
  6. Step 6: Final answer
    x = 145,595.67

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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.