Home / 105,121.54-145,068.24-57,376

Finding the Fourth Proportional to 105,121.54, 145,068.24 and 57,376

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Solution

The fourth proportional to 105,121.54, 145,068.24 and 57,376 is: 79,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,121.54 : 145,068.24 = 57,376 : x
  2. Step 2: Convert to fraction form
    105,121.54/145,068.24 = 57,376/x
  3. Step 3: Cross multiply
    105,121.54x = 145,068.24 × 57,376
  4. Step 4: Simplify right side
    105,121.54x = 8,323,435,338.24
  5. Step 5: Solve for x
    x = 8,323,435,338.24/105,121.54
  6. Step 6: Final answer
    x = 79,179.16

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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.