Home / 139,028.10-208,542.15-45,543.30

Finding the Fourth Proportional to 139,028.10, 208,542.15 and 45,543.30

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Solution

The fourth proportional to 139,028.10, 208,542.15 and 45,543.30 is: 68,314.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,028.10 : 208,542.15 = 45,543.30 : x
  2. Step 2: Convert to fraction form
    139,028.10/208,542.15 = 45,543.30/x
  3. Step 3: Cross multiply
    139,028.10x = 208,542.15 × 45,543.30
  4. Step 4: Simplify right side
    139,028.10x = 9,497,697,700.10
  5. Step 5: Solve for x
    x = 9,497,697,700.10/139,028.10
  6. Step 6: Final answer
    x = 68,314.95

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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.