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Finding the Fourth Proportional to 104,158.91, 143,739.41 and 56,412.32

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Solution

The fourth proportional to 104,158.91, 143,739.41 and 56,412.32 is: 77,849.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,158.91 : 143,739.41 = 56,412.32 : x
  2. Step 2: Convert to fraction form
    104,158.91/143,739.41 = 56,412.32/x
  3. Step 3: Cross multiply
    104,158.91x = 143,739.41 × 56,412.32
  4. Step 4: Simplify right side
    104,158.91x = 8,108,672,592.77
  5. Step 5: Solve for x
    x = 8,108,672,592.77/104,158.91
  6. Step 6: Final answer
    x = 77,849.06

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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.