Home / 220,124.21-329,999.81-87,098.31

Finding the Fourth Proportional to 220,124.21, 329,999.81 and 87,098.31

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Solution

The fourth proportional to 220,124.21, 329,999.81 and 87,098.31 is: 130,573.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,124.21 : 329,999.81 = 87,098.31 : x
  2. Step 2: Convert to fraction form
    220,124.21/329,999.81 = 87,098.31/x
  3. Step 3: Cross multiply
    220,124.21x = 329,999.81 × 87,098.31
  4. Step 4: Simplify right side
    220,124.21x = 28,742,425,315.83
  5. Step 5: Solve for x
    x = 28,742,425,315.83/220,124.21
  6. Step 6: Final answer
    x = 130,573.67

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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.