Home / 135,809.04-187,415.06-75,380.21

Finding the Fourth Proportional to 135,809.04, 187,415.06 and 75,380.21

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Solution

The fourth proportional to 135,809.04, 187,415.06 and 75,380.21 is: 104,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,809.04 : 187,415.06 = 75,380.21 : x
  2. Step 2: Convert to fraction form
    135,809.04/187,415.06 = 75,380.21/x
  3. Step 3: Cross multiply
    135,809.04x = 187,415.06 × 75,380.21
  4. Step 4: Simplify right side
    135,809.04x = 14,127,386,579.96
  5. Step 5: Solve for x
    x = 14,127,386,579.96/135,809.04
  6. Step 6: Final answer
    x = 104,023.90

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1.5x scale

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.