Home / 74,008.20-111,012.30-72,280.20

Finding the Fourth Proportional to 74,008.20, 111,012.30 and 72,280.20

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Solution

The fourth proportional to 74,008.20, 111,012.30 and 72,280.20 is: 108,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,008.20 : 111,012.30 = 72,280.20 : x
  2. Step 2: Convert to fraction form
    74,008.20/111,012.30 = 72,280.20/x
  3. Step 3: Cross multiply
    74,008.20x = 111,012.30 × 72,280.20
  4. Step 4: Simplify right side
    74,008.20x = 8,023,991,246.46
  5. Step 5: Solve for x
    x = 8,023,991,246.46/74,008.20
  6. Step 6: Final answer
    x = 108,420.30

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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.