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Finding the Fourth Proportional to 139,653.57, 209,513.16 and 46,159.32

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Solution

The fourth proportional to 139,653.57, 209,513.16 and 46,159.32 is: 69,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,653.57 : 209,513.16 = 46,159.32 : x
  2. Step 2: Convert to fraction form
    139,653.57/209,513.16 = 46,159.32/x
  3. Step 3: Cross multiply
    139,653.57x = 209,513.16 × 46,159.32
  4. Step 4: Simplify right side
    139,653.57x = 9,670,984,996.65
  5. Step 5: Solve for x
    x = 9,670,984,996.65/139,653.57
  6. Step 6: Final answer
    x = 69,249.82

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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.