Home / 139,614.02-209,418.32-39,774.86

Finding the Fourth Proportional to 139,614.02, 209,418.32 and 39,774.86

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Solution

The fourth proportional to 139,614.02, 209,418.32 and 39,774.86 is: 59,661.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,614.02 : 209,418.32 = 39,774.86 : x
  2. Step 2: Convert to fraction form
    139,614.02/209,418.32 = 39,774.86/x
  3. Step 3: Cross multiply
    139,614.02x = 209,418.32 × 39,774.86
  4. Step 4: Simplify right side
    139,614.02x = 8,329,583,113.47
  5. Step 5: Solve for x
    x = 8,329,583,113.47/139,614.02
  6. Step 6: Final answer
    x = 59,661.51

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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.