Home / 153,485.05-211,815.90-85,501.94

Finding the Fourth Proportional to 153,485.05, 211,815.90 and 85,501.94

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Solution

The fourth proportional to 153,485.05, 211,815.90 and 85,501.94 is: 117,996.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,485.05 : 211,815.90 = 85,501.94 : x
  2. Step 2: Convert to fraction form
    153,485.05/211,815.90 = 85,501.94/x
  3. Step 3: Cross multiply
    153,485.05x = 211,815.90 × 85,501.94
  4. Step 4: Simplify right side
    153,485.05x = 18,110,670,902.39
  5. Step 5: Solve for x
    x = 18,110,670,902.39/153,485.05
  6. Step 6: Final answer
    x = 117,996.32

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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.