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Finding the Fourth Proportional to 143,671.20, 215,580.64 and 63,763.92

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Solution

The fourth proportional to 143,671.20, 215,580.64 and 63,763.92 is: 95,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,671.20 : 215,580.64 = 63,763.92 : x
  2. Step 2: Convert to fraction form
    143,671.20/215,580.64 = 63,763.92/x
  3. Step 3: Cross multiply
    143,671.20x = 215,580.64 × 63,763.92
  4. Step 4: Simplify right side
    143,671.20x = 13,746,266,682.51
  5. Step 5: Solve for x
    x = 13,746,266,682.51/143,671.20
  6. Step 6: Final answer
    x = 95,678.65

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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.