Home / 99,341.20-137,141.65-76,629.20

Finding the Fourth Proportional to 99,341.20, 137,141.65 and 76,629.20

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Solution

The fourth proportional to 99,341.20, 137,141.65 and 76,629.20 is: 105,787.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,341.20 : 137,141.65 = 76,629.20 : x
  2. Step 2: Convert to fraction form
    99,341.20/137,141.65 = 76,629.20/x
  3. Step 3: Cross multiply
    99,341.20x = 137,141.65 × 76,629.20
  4. Step 4: Simplify right side
    99,341.20x = 10,509,054,926.18
  5. Step 5: Solve for x
    x = 10,509,054,926.18/99,341.20
  6. Step 6: Final answer
    x = 105,787.48

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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.