Home / 99,983.20-137,980.98-57,541.84

Finding the Fourth Proportional to 99,983.20, 137,980.98 and 57,541.84

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Solution

The fourth proportional to 99,983.20, 137,980.98 and 57,541.84 is: 79,410.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,983.20 : 137,980.98 = 57,541.84 : x
  2. Step 2: Convert to fraction form
    99,983.20/137,980.98 = 57,541.84/x
  3. Step 3: Cross multiply
    99,983.20x = 137,980.98 × 57,541.84
  4. Step 4: Simplify right side
    99,983.20x = 7,939,679,474.20
  5. Step 5: Solve for x
    x = 7,939,679,474.20/99,983.20
  6. Step 6: Final answer
    x = 79,410.14

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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.