Home / 112,647.33-155,492.13-64,919.70

Finding the Fourth Proportional to 112,647.33, 155,492.13 and 64,919.70

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Solution

The fourth proportional to 112,647.33, 155,492.13 and 64,919.70 is: 89,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,647.33 : 155,492.13 = 64,919.70 : x
  2. Step 2: Convert to fraction form
    112,647.33/155,492.13 = 64,919.70/x
  3. Step 3: Cross multiply
    112,647.33x = 155,492.13 × 64,919.70
  4. Step 4: Simplify right side
    112,647.33x = 10,094,502,431.96
  5. Step 5: Solve for x
    x = 10,094,502,431.96/112,647.33
  6. Step 6: Final answer
    x = 89,611.56

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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.