Home / 115,308.95-159,226.43-72,362.88

Finding the Fourth Proportional to 115,308.95, 159,226.43 and 72,362.88

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Solution

The fourth proportional to 115,308.95, 159,226.43 and 72,362.88 is: 99,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,308.95 : 159,226.43 = 72,362.88 : x
  2. Step 2: Convert to fraction form
    115,308.95/159,226.43 = 72,362.88/x
  3. Step 3: Cross multiply
    115,308.95x = 159,226.43 × 72,362.88
  4. Step 4: Simplify right side
    115,308.95x = 11,522,082,685.10
  5. Step 5: Solve for x
    x = 11,522,082,685.10/115,308.95
  6. Step 6: Final answer
    x = 99,923.58

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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.