Home / 139,003.75-208,507.45-45,509.50

Finding the Fourth Proportional to 139,003.75, 208,507.45 and 45,509.50

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Solution

The fourth proportional to 139,003.75, 208,507.45 and 45,509.50 is: 68,264.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,003.75 : 208,507.45 = 45,509.50 : x
  2. Step 2: Convert to fraction form
    139,003.75/208,507.45 = 45,509.50/x
  3. Step 3: Cross multiply
    139,003.75x = 208,507.45 × 45,509.50
  4. Step 4: Simplify right side
    139,003.75x = 9,489,069,795.78
  5. Step 5: Solve for x
    x = 9,489,069,795.78/139,003.75
  6. Step 6: Final answer
    x = 68,264.85

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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.