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Finding the Fourth Proportional to 129,776.10, 194,700.60 and 63,218.40

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Solution

The fourth proportional to 129,776.10, 194,700.60 and 63,218.40 is: 94,845.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,776.10 : 194,700.60 = 63,218.40 : x
  2. Step 2: Convert to fraction form
    129,776.10/194,700.60 = 63,218.40/x
  3. Step 3: Cross multiply
    129,776.10x = 194,700.60 × 63,218.40
  4. Step 4: Simplify right side
    129,776.10x = 12,308,660,411.04
  5. Step 5: Solve for x
    x = 12,308,660,411.04/129,776.10
  6. Step 6: Final answer
    x = 94,845.36

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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.