Home / 129,490.10-194,416.88-66,355.59

Finding the Fourth Proportional to 129,490.10, 194,416.88 and 66,355.59

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Solution

The fourth proportional to 129,490.10, 194,416.88 and 66,355.59 is: 99,626.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,490.10 : 194,416.88 = 66,355.59 : x
  2. Step 2: Convert to fraction form
    129,490.10/194,416.88 = 66,355.59/x
  3. Step 3: Cross multiply
    129,490.10x = 194,416.88 × 66,355.59
  4. Step 4: Simplify right side
    129,490.10x = 12,900,646,446.58
  5. Step 5: Solve for x
    x = 12,900,646,446.58/129,490.10
  6. Step 6: Final answer
    x = 99,626.51

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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.