Home / 140,221.08-210,331.62-74,541.72

Finding the Fourth Proportional to 140,221.08, 210,331.62 and 74,541.72

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Solution

The fourth proportional to 140,221.08, 210,331.62 and 74,541.72 is: 111,812.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,221.08 : 210,331.62 = 74,541.72 : x
  2. Step 2: Convert to fraction form
    140,221.08/210,331.62 = 74,541.72/x
  3. Step 3: Cross multiply
    140,221.08x = 210,331.62 × 74,541.72
  4. Step 4: Simplify right side
    140,221.08x = 15,678,480,725.19
  5. Step 5: Solve for x
    x = 15,678,480,725.19/140,221.08
  6. Step 6: Final answer
    x = 111,812.58

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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.