Home / 142,825.74-196,963.56-85,455.87

Finding the Fourth Proportional to 142,825.74, 196,963.56 and 85,455.87

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Solution

The fourth proportional to 142,825.74, 196,963.56 and 85,455.87 is: 117,847.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,825.74 : 196,963.56 = 85,455.87 : x
  2. Step 2: Convert to fraction form
    142,825.74/196,963.56 = 85,455.87/x
  3. Step 3: Cross multiply
    142,825.74x = 196,963.56 × 85,455.87
  4. Step 4: Simplify right side
    142,825.74x = 16,831,692,378.10
  5. Step 5: Solve for x
    x = 16,831,692,378.10/142,825.74
  6. Step 6: Final answer
    x = 117,847.75

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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.