Home / 153,900.03-212,392.77-85,930.38

Finding the Fourth Proportional to 153,900.03, 212,392.77 and 85,930.38

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Solution

The fourth proportional to 153,900.03, 212,392.77 and 85,930.38 is: 118,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,900.03 : 212,392.77 = 85,930.38 : x
  2. Step 2: Convert to fraction form
    153,900.03/212,392.77 = 85,930.38/x
  3. Step 3: Cross multiply
    153,900.03x = 212,392.77 × 85,930.38
  4. Step 4: Simplify right side
    153,900.03x = 18,250,991,435.35
  5. Step 5: Solve for x
    x = 18,250,991,435.35/153,900.03
  6. Step 6: Final answer
    x = 118,589.91

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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.