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Finding the Fourth Proportional to 104,354.58, 156,411.87 and 45,130.74

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Solution

The fourth proportional to 104,354.58, 156,411.87 and 45,130.74 is: 67,644.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,354.58 : 156,411.87 = 45,130.74 : x
  2. Step 2: Convert to fraction form
    104,354.58/156,411.87 = 45,130.74/x
  3. Step 3: Cross multiply
    104,354.58x = 156,411.87 × 45,130.74
  4. Step 4: Simplify right side
    104,354.58x = 7,058,983,437.88
  5. Step 5: Solve for x
    x = 7,058,983,437.88/104,354.58
  6. Step 6: Final answer
    x = 67,644.21

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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.