Home / 153,724.01-212,139.43-85,745.39

Finding the Fourth Proportional to 153,724.01, 212,139.43 and 85,745.39

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Solution

The fourth proportional to 153,724.01, 212,139.43 and 85,745.39 is: 118,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,724.01 : 212,139.43 = 85,745.39 : x
  2. Step 2: Convert to fraction form
    153,724.01/212,139.43 = 85,745.39/x
  3. Step 3: Cross multiply
    153,724.01x = 212,139.43 × 85,745.39
  4. Step 4: Simplify right side
    153,724.01x = 18,189,978,159.73
  5. Step 5: Solve for x
    x = 18,189,978,159.73/153,724.01
  6. Step 6: Final answer
    x = 118,328.80

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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.