Home / 125,409.49-188,113.73-45,428.76

Finding the Fourth Proportional to 125,409.49, 188,113.73 and 45,428.76

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Solution

The fourth proportional to 125,409.49, 188,113.73 and 45,428.76 is: 68,142.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,409.49 : 188,113.73 = 45,428.76 : x
  2. Step 2: Convert to fraction form
    125,409.49/188,113.73 = 45,428.76/x
  3. Step 3: Cross multiply
    125,409.49x = 188,113.73 × 45,428.76
  4. Step 4: Simplify right side
    125,409.49x = 8,545,773,265.73
  5. Step 5: Solve for x
    x = 8,545,773,265.73/125,409.49
  6. Step 6: Final answer
    x = 68,142.96

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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.