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Finding the Fourth Proportional to 112,020.24, 154,580.82 and 61,719.24

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Solution

The fourth proportional to 112,020.24, 154,580.82 and 61,719.24 is: 85,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,020.24 : 154,580.82 = 61,719.24 : x
  2. Step 2: Convert to fraction form
    112,020.24/154,580.82 = 61,719.24/x
  3. Step 3: Cross multiply
    112,020.24x = 154,580.82 × 61,719.24
  4. Step 4: Simplify right side
    112,020.24x = 9,540,610,728.98
  5. Step 5: Solve for x
    x = 9,540,610,728.98/112,020.24
  6. Step 6: Final answer
    x = 85,168.63

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1.5x scale

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.