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Finding the Fourth Proportional to 112,012, 154,576.56 and 61,712.08

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Solution

The fourth proportional to 112,012, 154,576.56 and 61,712.08 is: 85,162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,012 : 154,576.56 = 61,712.08 : x
  2. Step 2: Convert to fraction form
    112,012/154,576.56 = 61,712.08/x
  3. Step 3: Cross multiply
    112,012x = 154,576.56 × 61,712.08
  4. Step 4: Simplify right side
    112,012x = 9,539,241,036.84
  5. Step 5: Solve for x
    x = 9,539,241,036.84/112,012
  6. Step 6: Final answer
    x = 85,162.67

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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.