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Finding the Fourth Proportional to 142,735.70, 214,103.55 and 89,974.10

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Solution

The fourth proportional to 142,735.70, 214,103.55 and 89,974.10 is: 134,961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,735.70 : 214,103.55 = 89,974.10 : x
  2. Step 2: Convert to fraction form
    142,735.70/214,103.55 = 89,974.10/x
  3. Step 3: Cross multiply
    142,735.70x = 214,103.55 × 89,974.10
  4. Step 4: Simplify right side
    142,735.70x = 19,263,774,218.06
  5. Step 5: Solve for x
    x = 19,263,774,218.06/142,735.70
  6. Step 6: Final answer
    x = 134,961.15

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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.