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Finding the Fourth Proportional to 145,679.44, 201,047.82 and 81,153.82

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Solution

The fourth proportional to 145,679.44, 201,047.82 and 81,153.82 is: 111,997.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,679.44 : 201,047.82 = 81,153.82 : x
  2. Step 2: Convert to fraction form
    145,679.44/201,047.82 = 81,153.82/x
  3. Step 3: Cross multiply
    145,679.44x = 201,047.82 × 81,153.82
  4. Step 4: Simplify right side
    145,679.44x = 16,315,798,595.67
  5. Step 5: Solve for x
    x = 16,315,798,595.67/145,679.44
  6. Step 6: Final answer
    x = 111,997.95

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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.