Home / 129,905.40-194,858.10-124,721.40

Finding the Fourth Proportional to 129,905.40, 194,858.10 and 124,721.40

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Solution

The fourth proportional to 129,905.40, 194,858.10 and 124,721.40 is: 187,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,905.40 : 194,858.10 = 124,721.40 : x
  2. Step 2: Convert to fraction form
    129,905.40/194,858.10 = 124,721.40/x
  3. Step 3: Cross multiply
    129,905.40x = 194,858.10 × 124,721.40
  4. Step 4: Simplify right side
    129,905.40x = 24,302,975,033.34
  5. Step 5: Solve for x
    x = 24,302,975,033.34/129,905.40
  6. Step 6: Final answer
    x = 187,082.10

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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.