Home / 210,576.32-315,774.57-121,891.04

Finding the Fourth Proportional to 210,576.32, 315,774.57 and 121,891.04

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Solution

The fourth proportional to 210,576.32, 315,774.57 and 121,891.04 is: 182,784.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,576.32 : 315,774.57 = 121,891.04 : x
  2. Step 2: Convert to fraction form
    210,576.32/315,774.57 = 121,891.04/x
  3. Step 3: Cross multiply
    210,576.32x = 315,774.57 × 121,891.04
  4. Step 4: Simplify right side
    210,576.32x = 38,490,090,742.85
  5. Step 5: Solve for x
    x = 38,490,090,742.85/210,576.32
  6. Step 6: Final answer
    x = 182,784.52

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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.