Home / 153,111.97-211,301.55-85,135.92

Finding the Fourth Proportional to 153,111.97, 211,301.55 and 85,135.92

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Solution

The fourth proportional to 153,111.97, 211,301.55 and 85,135.92 is: 117,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,111.97 : 211,301.55 = 85,135.92 : x
  2. Step 2: Convert to fraction form
    153,111.97/211,301.55 = 85,135.92/x
  3. Step 3: Cross multiply
    153,111.97x = 211,301.55 × 85,135.92
  4. Step 4: Simplify right side
    153,111.97x = 17,989,351,856.68
  5. Step 5: Solve for x
    x = 17,989,351,856.68/153,111.97
  6. Step 6: Final answer
    x = 117,491.48

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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.