Home / 139,645.08-208,518.91-135,861.48

Finding the Fourth Proportional to 139,645.08, 208,518.91 and 135,861.48

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Solution

The fourth proportional to 139,645.08, 208,518.91 and 135,861.48 is: 202,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,645.08 : 208,518.91 = 135,861.48 : x
  2. Step 2: Convert to fraction form
    139,645.08/208,518.91 = 135,861.48/x
  3. Step 3: Cross multiply
    139,645.08x = 208,518.91 × 135,861.48
  4. Step 4: Simplify right side
    139,645.08x = 28,329,687,720.59
  5. Step 5: Solve for x
    x = 28,329,687,720.59/139,645.08
  6. Step 6: Final answer
    x = 202,869.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.