Home / 216,171.15-298,321.16-135,602.07

Finding the Fourth Proportional to 216,171.15, 298,321.16 and 135,602.07

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Solution

The fourth proportional to 216,171.15, 298,321.16 and 135,602.07 is: 187,133.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,171.15 : 298,321.16 = 135,602.07 : x
  2. Step 2: Convert to fraction form
    216,171.15/298,321.16 = 135,602.07/x
  3. Step 3: Cross multiply
    216,171.15x = 298,321.16 × 135,602.07
  4. Step 4: Simplify right side
    216,171.15x = 40,452,966,142.79
  5. Step 5: Solve for x
    x = 40,452,966,142.79/216,171.15
  6. Step 6: Final answer
    x = 187,133.97

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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.