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Finding the Fourth Proportional to 125,166.87, 172,752.95 and 79,858.91

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Solution

The fourth proportional to 125,166.87, 172,752.95 and 79,858.91 is: 110,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,166.87 : 172,752.95 = 79,858.91 : x
  2. Step 2: Convert to fraction form
    125,166.87/172,752.95 = 79,858.91/x
  3. Step 3: Cross multiply
    125,166.87x = 172,752.95 × 79,858.91
  4. Step 4: Simplify right side
    125,166.87x = 13,795,862,917.81
  5. Step 5: Solve for x
    x = 13,795,862,917.81/125,166.87
  6. Step 6: Final answer
    x = 110,219.76

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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.