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Finding the Fourth Proportional to 151,199.84, 208,628.88 and 87,534.56

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Solution

The fourth proportional to 151,199.84, 208,628.88 and 87,534.56 is: 120,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,199.84 : 208,628.88 = 87,534.56 : x
  2. Step 2: Convert to fraction form
    151,199.84/208,628.88 = 87,534.56/x
  3. Step 3: Cross multiply
    151,199.84x = 208,628.88 × 87,534.56
  4. Step 4: Simplify right side
    151,199.84x = 18,262,237,214.09
  5. Step 5: Solve for x
    x = 18,262,237,214.09/151,199.84
  6. Step 6: Final answer
    x = 120,782.12

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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.