Home / 112,638.30-155,475.44-64,923.40

Finding the Fourth Proportional to 112,638.30, 155,475.44 and 64,923.40

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Solution

The fourth proportional to 112,638.30, 155,475.44 and 64,923.40 is: 89,614.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,638.30 : 155,475.44 = 64,923.40 : x
  2. Step 2: Convert to fraction form
    112,638.30/155,475.44 = 64,923.40/x
  3. Step 3: Cross multiply
    112,638.30x = 155,475.44 × 64,923.40
  4. Step 4: Simplify right side
    112,638.30x = 10,093,994,181.30
  5. Step 5: Solve for x
    x = 10,093,994,181.30/112,638.30
  6. Step 6: Final answer
    x = 89,614.23

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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.