Home / 112,089.12-154,676.88-61,784.16

Finding the Fourth Proportional to 112,089.12, 154,676.88 and 61,784.16

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Solution

The fourth proportional to 112,089.12, 154,676.88 and 61,784.16 is: 85,258.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,089.12 : 154,676.88 = 61,784.16 : x
  2. Step 2: Convert to fraction form
    112,089.12/154,676.88 = 61,784.16/x
  3. Step 3: Cross multiply
    112,089.12x = 154,676.88 × 61,784.16
  4. Step 4: Simplify right side
    112,089.12x = 9,556,581,102.22
  5. Step 5: Solve for x
    x = 9,556,581,102.22/112,089.12
  6. Step 6: Final answer
    x = 85,258.78

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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.