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Finding the Fourth Proportional to 140,838.85, 211,292.90 and 40,999.92

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Solution

The fourth proportional to 140,838.85, 211,292.90 and 40,999.92 is: 61,509.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,838.85 : 211,292.90 = 40,999.92 : x
  2. Step 2: Convert to fraction form
    140,838.85/211,292.90 = 40,999.92/x
  3. Step 3: Cross multiply
    140,838.85x = 211,292.90 × 40,999.92
  4. Step 4: Simplify right side
    140,838.85x = 8,662,992,572.12
  5. Step 5: Solve for x
    x = 8,662,992,572.12/140,838.85
  6. Step 6: Final answer
    x = 61,509.96

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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.