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Finding the Fourth Proportional to 143,774.60, 215,661.90 and 101,784.20

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Solution

The fourth proportional to 143,774.60, 215,661.90 and 101,784.20 is: 152,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,774.60 : 215,661.90 = 101,784.20 : x
  2. Step 2: Convert to fraction form
    143,774.60/215,661.90 = 101,784.20/x
  3. Step 3: Cross multiply
    143,774.60x = 215,661.90 × 101,784.20
  4. Step 4: Simplify right side
    143,774.60x = 21,950,973,961.98
  5. Step 5: Solve for x
    x = 21,950,973,961.98/143,774.60
  6. Step 6: Final answer
    x = 152,676.30

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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.