Home / 98,319.56-146,812.40-78,102.12

Finding the Fourth Proportional to 98,319.56, 146,812.40 and 78,102.12

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Solution

The fourth proportional to 98,319.56, 146,812.40 and 78,102.12 is: 116,623.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,319.56 : 146,812.40 = 78,102.12 : x
  2. Step 2: Convert to fraction form
    98,319.56/146,812.40 = 78,102.12/x
  3. Step 3: Cross multiply
    98,319.56x = 146,812.40 × 78,102.12
  4. Step 4: Simplify right side
    98,319.56x = 11,466,360,135.21
  5. Step 5: Solve for x
    x = 11,466,360,135.21/98,319.56
  6. Step 6: Final answer
    x = 116,623.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.