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Finding the Fourth Proportional to 98,722.67, 136,236.74 and 53,400.51

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Solution

The fourth proportional to 98,722.67, 136,236.74 and 53,400.51 is: 73,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,722.67 : 136,236.74 = 53,400.51 : x
  2. Step 2: Convert to fraction form
    98,722.67/136,236.74 = 53,400.51/x
  3. Step 3: Cross multiply
    98,722.67x = 136,236.74 × 53,400.51
  4. Step 4: Simplify right side
    98,722.67x = 7,275,111,129.73
  5. Step 5: Solve for x
    x = 7,275,111,129.73/98,722.67
  6. Step 6: Final answer
    x = 73,692.41

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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.