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Finding the Fourth Proportional to 140,147.55, 210,221.33 and 46,653.30

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Solution

The fourth proportional to 140,147.55, 210,221.33 and 46,653.30 is: 69,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,147.55 : 210,221.33 = 46,653.30 : x
  2. Step 2: Convert to fraction form
    140,147.55/210,221.33 = 46,653.30/x
  3. Step 3: Cross multiply
    140,147.55x = 210,221.33 × 46,653.30
  4. Step 4: Simplify right side
    140,147.55x = 9,807,518,541.62
  5. Step 5: Solve for x
    x = 9,807,518,541.62/140,147.55
  6. Step 6: Final answer
    x = 69,979.95

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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.