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Finding the Fourth Proportional to 129,706.94, 194,681.70 and 79,884.24

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Solution

The fourth proportional to 129,706.94, 194,681.70 and 79,884.24 is: 119,901.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,706.94 : 194,681.70 = 79,884.24 : x
  2. Step 2: Convert to fraction form
    129,706.94/194,681.70 = 79,884.24/x
  3. Step 3: Cross multiply
    129,706.94x = 194,681.70 × 79,884.24
  4. Step 4: Simplify right side
    129,706.94x = 15,551,999,646.41
  5. Step 5: Solve for x
    x = 15,551,999,646.41/129,706.94
  6. Step 6: Final answer
    x = 119,901.07

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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.