Home / 66,146.09-99,225.69-21,156.14

Finding the Fourth Proportional to 66,146.09, 99,225.69 and 21,156.14

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Solution

The fourth proportional to 66,146.09, 99,225.69 and 21,156.14 is: 31,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,146.09 : 99,225.69 = 21,156.14 : x
  2. Step 2: Convert to fraction form
    66,146.09/99,225.69 = 21,156.14/x
  3. Step 3: Cross multiply
    66,146.09x = 99,225.69 × 21,156.14
  4. Step 4: Simplify right side
    66,146.09x = 2,099,232,093.11
  5. Step 5: Solve for x
    x = 2,099,232,093.11/66,146.09
  6. Step 6: Final answer
    x = 31,736.30

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1.5x scale

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.