Home / 142,196.45-213,338.70-85,333.86

Finding the Fourth Proportional to 142,196.45, 213,338.70 and 85,333.86

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Solution

The fourth proportional to 142,196.45, 213,338.70 and 85,333.86 is: 128,027.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,196.45 : 213,338.70 = 85,333.86 : x
  2. Step 2: Convert to fraction form
    142,196.45/213,338.70 = 85,333.86/x
  3. Step 3: Cross multiply
    142,196.45x = 213,338.70 × 85,333.86
  4. Step 4: Simplify right side
    142,196.45x = 18,205,014,758.38
  5. Step 5: Solve for x
    x = 18,205,014,758.38/142,196.45
  6. Step 6: Final answer
    x = 128,027.21

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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.