Home / 102,185.28-141,023.04-56,866.80

Finding the Fourth Proportional to 102,185.28, 141,023.04 and 56,866.80

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Solution

The fourth proportional to 102,185.28, 141,023.04 and 56,866.80 is: 78,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,185.28 : 141,023.04 = 56,866.80 : x
  2. Step 2: Convert to fraction form
    102,185.28/141,023.04 = 56,866.80/x
  3. Step 3: Cross multiply
    102,185.28x = 141,023.04 × 56,866.80
  4. Step 4: Simplify right side
    102,185.28x = 8,019,529,011.07
  5. Step 5: Solve for x
    x = 8,019,529,011.07/102,185.28
  6. Step 6: Final answer
    x = 78,480.28

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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.