Home / 104,338.23-156,157.43-85,617.51

Finding the Fourth Proportional to 104,338.23, 156,157.43 and 85,617.51

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Solution

The fourth proportional to 104,338.23, 156,157.43 and 85,617.51 is: 128,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,338.23 : 156,157.43 = 85,617.51 : x
  2. Step 2: Convert to fraction form
    104,338.23/156,157.43 = 85,617.51/x
  3. Step 3: Cross multiply
    104,338.23x = 156,157.43 × 85,617.51
  4. Step 4: Simplify right side
    104,338.23x = 13,369,809,896.51
  5. Step 5: Solve for x
    x = 13,369,809,896.51/104,338.23
  6. Step 6: Final answer
    x = 128,139.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.