Home / 98,738.28-136,234.98-56,281.32

Finding the Fourth Proportional to 98,738.28, 136,234.98 and 56,281.32

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Solution

The fourth proportional to 98,738.28, 136,234.98 and 56,281.32 is: 77,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,738.28 : 136,234.98 = 56,281.32 : x
  2. Step 2: Convert to fraction form
    98,738.28/136,234.98 = 56,281.32/x
  3. Step 3: Cross multiply
    98,738.28x = 136,234.98 × 56,281.32
  4. Step 4: Simplify right side
    98,738.28x = 7,667,484,504.57
  5. Step 5: Solve for x
    x = 7,667,484,504.57/98,738.28
  6. Step 6: Final answer
    x = 77,654.63

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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.