Home / 135,783.08-187,380.75-75,353.76

Finding the Fourth Proportional to 135,783.08, 187,380.75 and 75,353.76

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Solution

The fourth proportional to 135,783.08, 187,380.75 and 75,353.76 is: 103,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,783.08 : 187,380.75 = 75,353.76 : x
  2. Step 2: Convert to fraction form
    135,783.08/187,380.75 = 75,353.76/x
  3. Step 3: Cross multiply
    135,783.08x = 187,380.75 × 75,353.76
  4. Step 4: Simplify right side
    135,783.08x = 14,119,844,064.12
  5. Step 5: Solve for x
    x = 14,119,844,064.12/135,783.08
  6. Step 6: Final answer
    x = 103,988.24

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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.