Home / 129,429.04-194,143.56-40,690.30

Finding the Fourth Proportional to 129,429.04, 194,143.56 and 40,690.30

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Solution

The fourth proportional to 129,429.04, 194,143.56 and 40,690.30 is: 61,035.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,429.04 : 194,143.56 = 40,690.30 : x
  2. Step 2: Convert to fraction form
    129,429.04/194,143.56 = 40,690.30/x
  3. Step 3: Cross multiply
    129,429.04x = 194,143.56 × 40,690.30
  4. Step 4: Simplify right side
    129,429.04x = 7,899,759,699.47
  5. Step 5: Solve for x
    x = 7,899,759,699.47/129,429.04
  6. Step 6: Final answer
    x = 61,035.45

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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.