Home / 131,428.40-197,142.60-47,228.90

Finding the Fourth Proportional to 131,428.40, 197,142.60 and 47,228.90

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Solution

The fourth proportional to 131,428.40, 197,142.60 and 47,228.90 is: 70,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,428.40 : 197,142.60 = 47,228.90 : x
  2. Step 2: Convert to fraction form
    131,428.40/197,142.60 = 47,228.90/x
  3. Step 3: Cross multiply
    131,428.40x = 197,142.60 × 47,228.90
  4. Step 4: Simplify right side
    131,428.40x = 9,310,828,141.14
  5. Step 5: Solve for x
    x = 9,310,828,141.14/131,428.40
  6. Step 6: Final answer
    x = 70,843.35

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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.