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Finding the Fourth Proportional to 140,619.48, 210,813.64 and 65,702.56

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Solution

The fourth proportional to 140,619.48, 210,813.64 and 65,702.56 is: 98,499.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,619.48 : 210,813.64 = 65,702.56 : x
  2. Step 2: Convert to fraction form
    140,619.48/210,813.64 = 65,702.56/x
  3. Step 3: Cross multiply
    140,619.48x = 210,813.64 × 65,702.56
  4. Step 4: Simplify right side
    140,619.48x = 13,850,995,830.92
  5. Step 5: Solve for x
    x = 13,850,995,830.92/140,619.48
  6. Step 6: Final answer
    x = 98,499.84

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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.