Home / 210,052.16-315,078.43-90,031.22

Finding the Fourth Proportional to 210,052.16, 315,078.43 and 90,031.22

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Solution

The fourth proportional to 210,052.16, 315,078.43 and 90,031.22 is: 135,046.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,052.16 : 315,078.43 = 90,031.22 : x
  2. Step 2: Convert to fraction form
    210,052.16/315,078.43 = 90,031.22/x
  3. Step 3: Cross multiply
    210,052.16x = 315,078.43 × 90,031.22
  4. Step 4: Simplify right side
    210,052.16x = 28,366,894,998.43
  5. Step 5: Solve for x
    x = 28,366,894,998.43/210,052.16
  6. Step 6: Final answer
    x = 135,046.91

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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.