Home / 99,878.19-137,653.67-75,621.04

Finding the Fourth Proportional to 99,878.19, 137,653.67 and 75,621.04

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Solution

The fourth proportional to 99,878.19, 137,653.67 and 75,621.04 is: 104,222.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,878.19 : 137,653.67 = 75,621.04 : x
  2. Step 2: Convert to fraction form
    99,878.19/137,653.67 = 75,621.04/x
  3. Step 3: Cross multiply
    99,878.19x = 137,653.67 × 75,621.04
  4. Step 4: Simplify right side
    99,878.19x = 10,409,513,685.22
  5. Step 5: Solve for x
    x = 10,409,513,685.22/99,878.19
  6. Step 6: Final answer
    x = 104,222.09

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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.