Home / 153,103.28-211,256.96-85,118.32

Finding the Fourth Proportional to 153,103.28, 211,256.96 and 85,118.32

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Solution

The fourth proportional to 153,103.28, 211,256.96 and 85,118.32 is: 117,449.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,103.28 : 211,256.96 = 85,118.32 : x
  2. Step 2: Convert to fraction form
    153,103.28/211,256.96 = 85,118.32/x
  3. Step 3: Cross multiply
    153,103.28x = 211,256.96 × 85,118.32
  4. Step 4: Simplify right side
    153,103.28x = 17,981,837,523.51
  5. Step 5: Solve for x
    x = 17,981,837,523.51/153,103.28
  6. Step 6: Final answer
    x = 117,449.07

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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.