Home / 153,249.38-211,485.20-85,269.21

Finding the Fourth Proportional to 153,249.38, 211,485.20 and 85,269.21

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Solution

The fourth proportional to 153,249.38, 211,485.20 and 85,269.21 is: 117,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,249.38 : 211,485.20 = 85,269.21 : x
  2. Step 2: Convert to fraction form
    153,249.38/211,485.20 = 85,269.21/x
  3. Step 3: Cross multiply
    153,249.38x = 211,485.20 × 85,269.21
  4. Step 4: Simplify right side
    153,249.38x = 18,033,176,495.68
  5. Step 5: Solve for x
    x = 18,033,176,495.68/153,249.38
  6. Step 6: Final answer
    x = 117,672.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.