Home / 112,683.80-155,337.90-85,779.48

Finding the Fourth Proportional to 112,683.80, 155,337.90 and 85,779.48

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Solution

The fourth proportional to 112,683.80, 155,337.90 and 85,779.48 is: 118,249.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,683.80 : 155,337.90 = 85,779.48 : x
  2. Step 2: Convert to fraction form
    112,683.80/155,337.90 = 85,779.48/x
  3. Step 3: Cross multiply
    112,683.80x = 155,337.90 × 85,779.48
  4. Step 4: Simplify right side
    112,683.80x = 13,324,804,286.29
  5. Step 5: Solve for x
    x = 13,324,804,286.29/112,683.80
  6. Step 6: Final answer
    x = 118,249.51

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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.