Home / 105,678.60-158,538.68-39,119.32

Finding the Fourth Proportional to 105,678.60, 158,538.68 and 39,119.32

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Solution

The fourth proportional to 105,678.60, 158,538.68 and 39,119.32 is: 58,686.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,678.60 : 158,538.68 = 39,119.32 : x
  2. Step 2: Convert to fraction form
    105,678.60/158,538.68 = 39,119.32/x
  3. Step 3: Cross multiply
    105,678.60x = 158,538.68 × 39,119.32
  4. Step 4: Simplify right side
    105,678.60x = 6,201,925,355.30
  5. Step 5: Solve for x
    x = 6,201,925,355.30/105,678.60
  6. Step 6: Final answer
    x = 58,686.67

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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.