Home / 153,105.41-211,292.47-85,129.34

Finding the Fourth Proportional to 153,105.41, 211,292.47 and 85,129.34

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Solution

The fourth proportional to 153,105.41, 211,292.47 and 85,129.34 is: 117,482.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,105.41 : 211,292.47 = 85,129.34 : x
  2. Step 2: Convert to fraction form
    153,105.41/211,292.47 = 85,129.34/x
  3. Step 3: Cross multiply
    153,105.41x = 211,292.47 × 85,129.34
  4. Step 4: Simplify right side
    153,105.41x = 17,987,188,833.48
  5. Step 5: Solve for x
    x = 17,987,188,833.48/153,105.41
  6. Step 6: Final answer
    x = 117,482.39

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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.