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Finding the Fourth Proportional to 114,415.20, 171,622.80 and 72,424.80

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Solution

The fourth proportional to 114,415.20, 171,622.80 and 72,424.80 is: 108,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,415.20 : 171,622.80 = 72,424.80 : x
  2. Step 2: Convert to fraction form
    114,415.20/171,622.80 = 72,424.80/x
  3. Step 3: Cross multiply
    114,415.20x = 171,622.80 × 72,424.80
  4. Step 4: Simplify right side
    114,415.20x = 12,429,746,965.44
  5. Step 5: Solve for x
    x = 12,429,746,965.44/114,415.20
  6. Step 6: Final answer
    x = 108,637.20

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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.