Home / 99,859.08-149,707.40-68,189.28

Finding the Fourth Proportional to 99,859.08, 149,707.40 and 68,189.28

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Solution

The fourth proportional to 99,859.08, 149,707.40 and 68,189.28 is: 102,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,859.08 : 149,707.40 = 68,189.28 : x
  2. Step 2: Convert to fraction form
    99,859.08/149,707.40 = 68,189.28/x
  3. Step 3: Cross multiply
    99,859.08x = 149,707.40 × 68,189.28
  4. Step 4: Simplify right side
    99,859.08x = 10,208,439,816.67
  5. Step 5: Solve for x
    x = 10,208,439,816.67/99,859.08
  6. Step 6: Final answer
    x = 102,228.46

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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.