Home / 99,478.14-137,289.51-74,283.90

Finding the Fourth Proportional to 99,478.14, 137,289.51 and 74,283.90

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Solution

The fourth proportional to 99,478.14, 137,289.51 and 74,283.90 is: 102,519.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,478.14 : 137,289.51 = 74,283.90 : x
  2. Step 2: Convert to fraction form
    99,478.14/137,289.51 = 74,283.90/x
  3. Step 3: Cross multiply
    99,478.14x = 137,289.51 × 74,283.90
  4. Step 4: Simplify right side
    99,478.14x = 10,198,400,231.89
  5. Step 5: Solve for x
    x = 10,198,400,231.89/99,478.14
  6. Step 6: Final answer
    x = 102,519.01

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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.