Home / 99,106.21-136,762.19-56,667.52

Finding the Fourth Proportional to 99,106.21, 136,762.19 and 56,667.52

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Solution

The fourth proportional to 99,106.21, 136,762.19 and 56,667.52 is: 78,198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,106.21 : 136,762.19 = 56,667.52 : x
  2. Step 2: Convert to fraction form
    99,106.21/136,762.19 = 56,667.52/x
  3. Step 3: Cross multiply
    99,106.21x = 136,762.19 × 56,667.52
  4. Step 4: Simplify right side
    99,106.21x = 7,749,973,453.26
  5. Step 5: Solve for x
    x = 7,749,973,453.26/99,106.21
  6. Step 6: Final answer
    x = 78,198.67

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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.