Home / 140,020.08-210,033-78,084.72

Finding the Fourth Proportional to 140,020.08, 210,033 and 78,084.72

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Solution

The fourth proportional to 140,020.08, 210,033 and 78,084.72 is: 117,128.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,020.08 : 210,033 = 78,084.72 : x
  2. Step 2: Convert to fraction form
    140,020.08/210,033 = 78,084.72/x
  3. Step 3: Cross multiply
    140,020.08x = 210,033 × 78,084.72
  4. Step 4: Simplify right side
    140,020.08x = 16,400,367,995.76
  5. Step 5: Solve for x
    x = 16,400,367,995.76/140,020.08
  6. Step 6: Final answer
    x = 117,128.69

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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.