Home / 78,165.12-117,246.63-19,000.62

Finding the Fourth Proportional to 78,165.12, 117,246.63 and 19,000.62

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Solution

The fourth proportional to 78,165.12, 117,246.63 and 19,000.62 is: 28,500.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,165.12 : 117,246.63 = 19,000.62 : x
  2. Step 2: Convert to fraction form
    78,165.12/117,246.63 = 19,000.62/x
  3. Step 3: Cross multiply
    78,165.12x = 117,246.63 × 19,000.62
  4. Step 4: Simplify right side
    78,165.12x = 2,227,758,662.91
  5. Step 5: Solve for x
    x = 2,227,758,662.91/78,165.12
  6. Step 6: Final answer
    x = 28,500.67

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1.5x scale

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.