Home / 153,600.37-211,969.47-85,621.66

Finding the Fourth Proportional to 153,600.37, 211,969.47 and 85,621.66

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Solution

The fourth proportional to 153,600.37, 211,969.47 and 85,621.66 is: 118,158.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,600.37 : 211,969.47 = 85,621.66 : x
  2. Step 2: Convert to fraction form
    153,600.37/211,969.47 = 85,621.66/x
  3. Step 3: Cross multiply
    153,600.37x = 211,969.47 × 85,621.66
  4. Step 4: Simplify right side
    153,600.37x = 18,149,177,890.72
  5. Step 5: Solve for x
    x = 18,149,177,890.72/153,600.37
  6. Step 6: Final answer
    x = 118,158.43

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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.