Home / 112,676.70-155,495.68-61,688.57

Finding the Fourth Proportional to 112,676.70, 155,495.68 and 61,688.57

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Solution

The fourth proportional to 112,676.70, 155,495.68 and 61,688.57 is: 85,131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,676.70 : 155,495.68 = 61,688.57 : x
  2. Step 2: Convert to fraction form
    112,676.70/155,495.68 = 61,688.57/x
  3. Step 3: Cross multiply
    112,676.70x = 155,495.68 × 61,688.57
  4. Step 4: Simplify right side
    112,676.70x = 9,592,306,140.38
  5. Step 5: Solve for x
    x = 9,592,306,140.38/112,676.70
  6. Step 6: Final answer
    x = 85,131.23

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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.