Home / 139,719.96-209,581.86-39,880.08

Finding the Fourth Proportional to 139,719.96, 209,581.86 and 39,880.08

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Solution

The fourth proportional to 139,719.96, 209,581.86 and 39,880.08 is: 59,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,719.96 : 209,581.86 = 39,880.08 : x
  2. Step 2: Convert to fraction form
    139,719.96/209,581.86 = 39,880.08/x
  3. Step 3: Cross multiply
    139,719.96x = 209,581.86 × 39,880.08
  4. Step 4: Simplify right side
    139,719.96x = 8,358,141,343.35
  5. Step 5: Solve for x
    x = 8,358,141,343.35/139,719.96
  6. Step 6: Final answer
    x = 59,820.67

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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.