Home / 129,489,123.40-194,202,581.10-74,783,408.20

Finding the Fourth Proportional to 129,489,123.40, 194,202,581.10 and 74,783,408.20

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Solution

The fourth proportional to 129,489,123.40, 194,202,581.10 and 74,783,408.20 is: 112,157,148.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,489,123.40 : 194,202,581.10 = 74,783,408.20 : x
  2. Step 2: Convert to fraction form
    129,489,123.40/194,202,581.10 = 74,783,408.20/x
  3. Step 3: Cross multiply
    129,489,123.40x = 194,202,581.10 × 74,783,408.20
  4. Step 4: Simplify right side
    129,489,123.40x = 14,523,130,895,894,906
  5. Step 5: Solve for x
    x = 14,523,130,895,894,906/129,489,123.40
  6. Step 6: Final answer
    x = 112,157,148.91

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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.