Home / 130,905.20-180,650.04-74,317.52

Finding the Fourth Proportional to 130,905.20, 180,650.04 and 74,317.52

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Solution

The fourth proportional to 130,905.20, 180,650.04 and 74,317.52 is: 102,558.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,905.20 : 180,650.04 = 74,317.52 : x
  2. Step 2: Convert to fraction form
    130,905.20/180,650.04 = 74,317.52/x
  3. Step 3: Cross multiply
    130,905.20x = 180,650.04 × 74,317.52
  4. Step 4: Simplify right side
    130,905.20x = 13,425,462,960.70
  5. Step 5: Solve for x
    x = 13,425,462,960.70/130,905.20
  6. Step 6: Final answer
    x = 102,558.67

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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.