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Finding the Fourth Proportional to 139,523.76, 209,292.90 and 46,036.80

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Solution

The fourth proportional to 139,523.76, 209,292.90 and 46,036.80 is: 69,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,523.76 : 209,292.90 = 46,036.80 : x
  2. Step 2: Convert to fraction form
    139,523.76/209,292.90 = 46,036.80/x
  3. Step 3: Cross multiply
    139,523.76x = 209,292.90 × 46,036.80
  4. Step 4: Simplify right side
    139,523.76x = 9,635,175,378.72
  5. Step 5: Solve for x
    x = 9,635,175,378.72/139,523.76
  6. Step 6: Final answer
    x = 69,057.60

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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.