Home / 155,900.09-215,200.19-121,376.27

Finding the Fourth Proportional to 155,900.09, 215,200.19 and 121,376.27

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Solution

The fourth proportional to 155,900.09, 215,200.19 and 121,376.27 is: 167,544.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,900.09 : 215,200.19 = 121,376.27 : x
  2. Step 2: Convert to fraction form
    155,900.09/215,200.19 = 121,376.27/x
  3. Step 3: Cross multiply
    155,900.09x = 215,200.19 × 121,376.27
  4. Step 4: Simplify right side
    155,900.09x = 26,120,197,206.93
  5. Step 5: Solve for x
    x = 26,120,197,206.93/155,900.09
  6. Step 6: Final answer
    x = 167,544.46

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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.