Home / 106,458.48-159,355.58-78,410.21

Finding the Fourth Proportional to 106,458.48, 159,355.58 and 78,410.21

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Solution

The fourth proportional to 106,458.48, 159,355.58 and 78,410.21 is: 117,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,458.48 : 159,355.58 = 78,410.21 : x
  2. Step 2: Convert to fraction form
    106,458.48/159,355.58 = 78,410.21/x
  3. Step 3: Cross multiply
    106,458.48x = 159,355.58 × 78,410.21
  4. Step 4: Simplify right side
    106,458.48x = 12,495,103,303.64
  5. Step 5: Solve for x
    x = 12,495,103,303.64/106,458.48
  6. Step 6: Final answer
    x = 117,370.67

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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.