Home / 153,577.12-211,953.64-85,600.30

Finding the Fourth Proportional to 153,577.12, 211,953.64 and 85,600.30

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Solution

The fourth proportional to 153,577.12, 211,953.64 and 85,600.30 is: 118,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,577.12 : 211,953.64 = 85,600.30 : x
  2. Step 2: Convert to fraction form
    153,577.12/211,953.64 = 85,600.30/x
  3. Step 3: Cross multiply
    153,577.12x = 211,953.64 × 85,600.30
  4. Step 4: Simplify right side
    153,577.12x = 18,143,295,170.09
  5. Step 5: Solve for x
    x = 18,143,295,170.09/153,577.12
  6. Step 6: Final answer
    x = 118,138.01

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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.