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Finding the Fourth Proportional to 180,007.80, 270,011.70 and 130,435.80

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Solution

The fourth proportional to 180,007.80, 270,011.70 and 130,435.80 is: 195,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,007.80 : 270,011.70 = 130,435.80 : x
  2. Step 2: Convert to fraction form
    180,007.80/270,011.70 = 130,435.80/x
  3. Step 3: Cross multiply
    180,007.80x = 270,011.70 × 130,435.80
  4. Step 4: Simplify right side
    180,007.80x = 35,219,192,098.86
  5. Step 5: Solve for x
    x = 35,219,192,098.86/180,007.80
  6. Step 6: Final answer
    x = 195,653.70

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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.