Home / 153,614.20-211,988.64-85,635.49

Finding the Fourth Proportional to 153,614.20, 211,988.64 and 85,635.49

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Solution

The fourth proportional to 153,614.20, 211,988.64 and 85,635.49 is: 118,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,614.20 : 211,988.64 = 85,635.49 : x
  2. Step 2: Convert to fraction form
    153,614.20/211,988.64 = 85,635.49/x
  3. Step 3: Cross multiply
    153,614.20x = 211,988.64 × 85,635.49
  4. Step 4: Simplify right side
    153,614.20x = 18,153,751,060.83
  5. Step 5: Solve for x
    x = 18,153,751,060.83/153,614.20
  6. Step 6: Final answer
    x = 118,177.56

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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.