Home / 141,813.45-195,711.80-81,403.65

Finding the Fourth Proportional to 141,813.45, 195,711.80 and 81,403.65

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Solution

The fourth proportional to 141,813.45, 195,711.80 and 81,403.65 is: 112,342.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,813.45 : 195,711.80 = 81,403.65 : x
  2. Step 2: Convert to fraction form
    141,813.45/195,711.80 = 81,403.65/x
  3. Step 3: Cross multiply
    141,813.45x = 195,711.80 × 81,403.65
  4. Step 4: Simplify right side
    141,813.45x = 15,931,654,461.05
  5. Step 5: Solve for x
    x = 15,931,654,461.05/141,813.45
  6. Step 6: Final answer
    x = 112,342.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.