Home / 142,260.81-196,258.24-85,639.38

Finding the Fourth Proportional to 142,260.81, 196,258.24 and 85,639.38

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Solution

The fourth proportional to 142,260.81, 196,258.24 and 85,639.38 is: 118,145.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,260.81 : 196,258.24 = 85,639.38 : x
  2. Step 2: Convert to fraction form
    142,260.81/196,258.24 = 85,639.38/x
  3. Step 3: Cross multiply
    142,260.81x = 196,258.24 × 85,639.38
  4. Step 4: Simplify right side
    142,260.81x = 16,807,432,584.00
  5. Step 5: Solve for x
    x = 16,807,432,584.00/142,260.81
  6. Step 6: Final answer
    x = 118,145.21

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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.