Home / 153,730.85-212,139.44-89,195.09

Finding the Fourth Proportional to 153,730.85, 212,139.44 and 89,195.09

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Solution

The fourth proportional to 153,730.85, 212,139.44 and 89,195.09 is: 123,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,730.85 : 212,139.44 = 89,195.09 : x
  2. Step 2: Convert to fraction form
    153,730.85/212,139.44 = 89,195.09/x
  3. Step 3: Cross multiply
    153,730.85x = 212,139.44 × 89,195.09
  4. Step 4: Simplify right side
    153,730.85x = 18,921,795,467.03
  5. Step 5: Solve for x
    x = 18,921,795,467.03/153,730.85
  6. Step 6: Final answer
    x = 123,083.92

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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.