Home / 153,965.88-212,460.80-85,977.54

Finding the Fourth Proportional to 153,965.88, 212,460.80 and 85,977.54

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Solution

The fourth proportional to 153,965.88, 212,460.80 and 85,977.54 is: 118,642.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,965.88 : 212,460.80 = 85,977.54 : x
  2. Step 2: Convert to fraction form
    153,965.88/212,460.80 = 85,977.54/x
  3. Step 3: Cross multiply
    153,965.88x = 212,460.80 × 85,977.54
  4. Step 4: Simplify right side
    153,965.88x = 18,266,856,500.54
  5. Step 5: Solve for x
    x = 18,266,856,500.54/153,965.88
  6. Step 6: Final answer
    x = 118,642.24

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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.