Home / 102,128.60-140,936.34-56,806.28

Finding the Fourth Proportional to 102,128.60, 140,936.34 and 56,806.28

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Solution

The fourth proportional to 102,128.60, 140,936.34 and 56,806.28 is: 78,392.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,128.60 : 140,936.34 = 56,806.28 : x
  2. Step 2: Convert to fraction form
    102,128.60/140,936.34 = 56,806.28/x
  3. Step 3: Cross multiply
    102,128.60x = 140,936.34 × 56,806.28
  4. Step 4: Simplify right side
    102,128.60x = 8,006,069,192.22
  5. Step 5: Solve for x
    x = 8,006,069,192.22/102,128.60
  6. Step 6: Final answer
    x = 78,392.04

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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.