Home / 139,931.61-209,896.36-40,091.88

Finding the Fourth Proportional to 139,931.61, 209,896.36 and 40,091.88

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Solution

The fourth proportional to 139,931.61, 209,896.36 and 40,091.88 is: 60,137.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,931.61 : 209,896.36 = 40,091.88 : x
  2. Step 2: Convert to fraction form
    139,931.61/209,896.36 = 40,091.88/x
  3. Step 3: Cross multiply
    139,931.61x = 209,896.36 × 40,091.88
  4. Step 4: Simplify right side
    139,931.61x = 8,415,139,677.56
  5. Step 5: Solve for x
    x = 8,415,139,677.56/139,931.61
  6. Step 6: Final answer
    x = 60,137.52

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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.