Home / 70,070.33-105,123.29-20,149.36

Finding the Fourth Proportional to 70,070.33, 105,123.29 and 20,149.36

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Solution

The fourth proportional to 70,070.33, 105,123.29 and 20,149.36 is: 30,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,070.33 : 105,123.29 = 20,149.36 : x
  2. Step 2: Convert to fraction form
    70,070.33/105,123.29 = 20,149.36/x
  3. Step 3: Cross multiply
    70,070.33x = 105,123.29 × 20,149.36
  4. Step 4: Simplify right side
    70,070.33x = 2,118,166,651.04
  5. Step 5: Solve for x
    x = 2,118,166,651.04/70,070.33
  6. Step 6: Final answer
    x = 30,229.15

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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.