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Finding the Fourth Proportional to 104,149.67, 143,726.30 and 56,402.87

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Solution

The fourth proportional to 104,149.67, 143,726.30 and 56,402.87 is: 77,835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,149.67 : 143,726.30 = 56,402.87 : x
  2. Step 2: Convert to fraction form
    104,149.67/143,726.30 = 56,402.87/x
  3. Step 3: Cross multiply
    104,149.67x = 143,726.30 × 56,402.87
  4. Step 4: Simplify right side
    104,149.67x = 8,106,575,025.35
  5. Step 5: Solve for x
    x = 8,106,575,025.35/104,149.67
  6. Step 6: Final answer
    x = 77,835.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.