Home / 129,941.61-194,928.81-45,681.97

Finding the Fourth Proportional to 129,941.61, 194,928.81 and 45,681.97

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Solution

The fourth proportional to 129,941.61, 194,928.81 and 45,681.97 is: 68,528.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,941.61 : 194,928.81 = 45,681.97 : x
  2. Step 2: Convert to fraction form
    129,941.61/194,928.81 = 45,681.97/x
  3. Step 3: Cross multiply
    129,941.61x = 194,928.81 × 45,681.97
  4. Step 4: Simplify right side
    129,941.61x = 8,904,731,075.91
  5. Step 5: Solve for x
    x = 8,904,731,075.91/129,941.61
  6. Step 6: Final answer
    x = 68,528.71

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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.