Home / 70,113.12-105,153.76-20,182.04

Finding the Fourth Proportional to 70,113.12, 105,153.76 and 20,182.04

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Solution

The fourth proportional to 70,113.12, 105,153.76 and 20,182.04 is: 30,268.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,113.12 : 105,153.76 = 20,182.04 : x
  2. Step 2: Convert to fraction form
    70,113.12/105,153.76 = 20,182.04/x
  3. Step 3: Cross multiply
    70,113.12x = 105,153.76 × 20,182.04
  4. Step 4: Simplify right side
    70,113.12x = 2,122,217,390.47
  5. Step 5: Solve for x
    x = 2,122,217,390.47/70,113.12
  6. Step 6: Final answer
    x = 30,268.48

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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.