Home / 85,427.40-127,838.70-74,454.60

Finding the Fourth Proportional to 85,427.40, 127,838.70 and 74,454.60

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Solution

The fourth proportional to 85,427.40, 127,838.70 and 74,454.60 is: 111,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,427.40 : 127,838.70 = 74,454.60 : x
  2. Step 2: Convert to fraction form
    85,427.40/127,838.70 = 74,454.60/x
  3. Step 3: Cross multiply
    85,427.40x = 127,838.70 × 74,454.60
  4. Step 4: Simplify right side
    85,427.40x = 9,518,179,273.02
  5. Step 5: Solve for x
    x = 9,518,179,273.02/85,427.40
  6. Step 6: Final answer
    x = 111,418.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.