Home / 112,676.33-155,495.17-61,688.21

Finding the Fourth Proportional to 112,676.33, 155,495.17 and 61,688.21

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Solution

The fourth proportional to 112,676.33, 155,495.17 and 61,688.21 is: 85,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,676.33 : 155,495.17 = 61,688.21 : x
  2. Step 2: Convert to fraction form
    112,676.33/155,495.17 = 61,688.21/x
  3. Step 3: Cross multiply
    112,676.33x = 155,495.17 × 61,688.21
  4. Step 4: Simplify right side
    112,676.33x = 9,592,217,923.47
  5. Step 5: Solve for x
    x = 9,592,217,923.47/112,676.33
  6. Step 6: Final answer
    x = 85,130.73

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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.