Home / 78,215.20-117,323.04-19,050.88

Finding the Fourth Proportional to 78,215.20, 117,323.04 and 19,050.88

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Solution

The fourth proportional to 78,215.20, 117,323.04 and 19,050.88 is: 28,576.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,215.20 : 117,323.04 = 19,050.88 : x
  2. Step 2: Convert to fraction form
    78,215.20/117,323.04 = 19,050.88/x
  3. Step 3: Cross multiply
    78,215.20x = 117,323.04 × 19,050.88
  4. Step 4: Simplify right side
    78,215.20x = 2,235,107,156.28
  5. Step 5: Solve for x
    x = 2,235,107,156.28/78,215.20
  6. Step 6: Final answer
    x = 28,576.38

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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.