Home / 135,885.20-187,515.27-75,459.67

Finding the Fourth Proportional to 135,885.20, 187,515.27 and 75,459.67

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Solution

The fourth proportional to 135,885.20, 187,515.27 and 75,459.67 is: 104,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,885.20 : 187,515.27 = 75,459.67 : x
  2. Step 2: Convert to fraction form
    135,885.20/187,515.27 = 75,459.67/x
  3. Step 3: Cross multiply
    135,885.20x = 187,515.27 × 75,459.67
  4. Step 4: Simplify right side
    135,885.20x = 14,149,839,925.37
  5. Step 5: Solve for x
    x = 14,149,839,925.37/135,885.20
  6. Step 6: Final answer
    x = 104,130.84

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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.