Home / 99,632.04-149,281.94-81,917.32

Finding the Fourth Proportional to 99,632.04, 149,281.94 and 81,917.32

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Solution

The fourth proportional to 99,632.04, 149,281.94 and 81,917.32 is: 122,739.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,632.04 : 149,281.94 = 81,917.32 : x
  2. Step 2: Convert to fraction form
    99,632.04/149,281.94 = 81,917.32/x
  3. Step 3: Cross multiply
    99,632.04x = 149,281.94 × 81,917.32
  4. Step 4: Simplify right side
    99,632.04x = 12,228,776,449.20
  5. Step 5: Solve for x
    x = 12,228,776,449.20/99,632.04
  6. Step 6: Final answer
    x = 122,739.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.