Home / 112,703.16-155,216.73-87,115.26

Finding the Fourth Proportional to 112,703.16, 155,216.73 and 87,115.26

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Solution

The fourth proportional to 112,703.16, 155,216.73 and 87,115.26 is: 119,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.16 : 155,216.73 = 87,115.26 : x
  2. Step 2: Convert to fraction form
    112,703.16/155,216.73 = 87,115.26/x
  3. Step 3: Cross multiply
    112,703.16x = 155,216.73 × 87,115.26
  4. Step 4: Simplify right side
    112,703.16x = 13,521,745,790.30
  5. Step 5: Solve for x
    x = 13,521,745,790.30/112,703.16
  6. Step 6: Final answer
    x = 119,976.63

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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.