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Finding the Fourth Proportional to 125,985,885.80, 188,978,828.70 and 104,462,525.30

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Solution

The fourth proportional to 125,985,885.80, 188,978,828.70 and 104,462,525.30 is: 156,693,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,985,885.80 : 188,978,828.70 = 104,462,525.30 : x
  2. Step 2: Convert to fraction form
    125,985,885.80/188,978,828.70 = 104,462,525.30/x
  3. Step 3: Cross multiply
    125,985,885.80x = 188,978,828.70 × 104,462,525.30
  4. Step 4: Simplify right side
    125,985,885.80x = 19,741,205,674,238,116
  5. Step 5: Solve for x
    x = 19,741,205,674,238,116/125,985,885.80
  6. Step 6: Final answer
    x = 156,693,787.95

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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.