Home / 135,681.28-187,217.74-75,242.32

Finding the Fourth Proportional to 135,681.28, 187,217.74 and 75,242.32

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Solution

The fourth proportional to 135,681.28, 187,217.74 and 75,242.32 is: 103,821.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,681.28 : 187,217.74 = 75,242.32 : x
  2. Step 2: Convert to fraction form
    135,681.28/187,217.74 = 75,242.32/x
  3. Step 3: Cross multiply
    135,681.28x = 187,217.74 × 75,242.32
  4. Step 4: Simplify right side
    135,681.28x = 14,086,697,102.76
  5. Step 5: Solve for x
    x = 14,086,697,102.76/135,681.28
  6. Step 6: Final answer
    x = 103,821.96

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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.