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Finding the Fourth Proportional to 139,646.88, 209,480.04 and 46,218.24

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Solution

The fourth proportional to 139,646.88, 209,480.04 and 46,218.24 is: 69,330.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,646.88 : 209,480.04 = 46,218.24 : x
  2. Step 2: Convert to fraction form
    139,646.88/209,480.04 = 46,218.24/x
  3. Step 3: Cross multiply
    139,646.88x = 209,480.04 × 46,218.24
  4. Step 4: Simplify right side
    139,646.88x = 9,681,798,763.93
  5. Step 5: Solve for x
    x = 9,681,798,763.93/139,646.88
  6. Step 6: Final answer
    x = 69,330.58

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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.