Home / 153,003.09-211,140.05-85,018.31

Finding the Fourth Proportional to 153,003.09, 211,140.05 and 85,018.31

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Solution

The fourth proportional to 153,003.09, 211,140.05 and 85,018.31 is: 117,322.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,003.09 : 211,140.05 = 85,018.31 : x
  2. Step 2: Convert to fraction form
    153,003.09/211,140.05 = 85,018.31/x
  3. Step 3: Cross multiply
    153,003.09x = 211,140.05 × 85,018.31
  4. Step 4: Simplify right side
    153,003.09x = 17,950,769,168.62
  5. Step 5: Solve for x
    x = 17,950,769,168.62/153,003.09
  6. Step 6: Final answer
    x = 117,322.92

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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.