Home / 129,981.10-194,643.60-85,366.30

Finding the Fourth Proportional to 129,981.10, 194,643.60 and 85,366.30

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Solution

The fourth proportional to 129,981.10, 194,643.60 and 85,366.30 is: 127,834.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,981.10 : 194,643.60 = 85,366.30 : x
  2. Step 2: Convert to fraction form
    129,981.10/194,643.60 = 85,366.30/x
  3. Step 3: Cross multiply
    129,981.10x = 194,643.60 × 85,366.30
  4. Step 4: Simplify right side
    129,981.10x = 16,616,003,950.68
  5. Step 5: Solve for x
    x = 16,616,003,950.68/129,981.10
  6. Step 6: Final answer
    x = 127,834.00

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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.