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Finding the Fourth Proportional to 190,963.52, 286,452.48 and 72,612.80

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Solution

The fourth proportional to 190,963.52, 286,452.48 and 72,612.80 is: 108,921.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,963.52 : 286,452.48 = 72,612.80 : x
  2. Step 2: Convert to fraction form
    190,963.52/286,452.48 = 72,612.80/x
  3. Step 3: Cross multiply
    190,963.52x = 286,452.48 × 72,612.80
  4. Step 4: Simplify right side
    190,963.52x = 20,800,116,639.74
  5. Step 5: Solve for x
    x = 20,800,116,639.74/190,963.52
  6. Step 6: Final answer
    x = 108,921.94

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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.