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Finding the Fourth Proportional to 147,361.92, 220,885.50 and 84,045.72

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Solution

The fourth proportional to 147,361.92, 220,885.50 and 84,045.72 is: 125,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,361.92 : 220,885.50 = 84,045.72 : x
  2. Step 2: Convert to fraction form
    147,361.92/220,885.50 = 84,045.72/x
  3. Step 3: Cross multiply
    147,361.92x = 220,885.50 × 84,045.72
  4. Step 4: Simplify right side
    147,361.92x = 18,564,480,885.06
  5. Step 5: Solve for x
    x = 18,564,480,885.06/147,361.92
  6. Step 6: Final answer
    x = 125,978.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.