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Finding the Fourth Proportional to 129,632.80, 194,492.40 and 63,114.40

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Solution

The fourth proportional to 129,632.80, 194,492.40 and 63,114.40 is: 94,692.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,632.80 : 194,492.40 = 63,114.40 : x
  2. Step 2: Convert to fraction form
    129,632.80/194,492.40 = 63,114.40/x
  3. Step 3: Cross multiply
    129,632.80x = 194,492.40 × 63,114.40
  4. Step 4: Simplify right side
    129,632.80x = 12,275,271,130.56
  5. Step 5: Solve for x
    x = 12,275,271,130.56/129,632.80
  6. Step 6: Final answer
    x = 94,692.63

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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.