Home / 135,572.54-187,089.95-75,143.30

Finding the Fourth Proportional to 135,572.54, 187,089.95 and 75,143.30

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Solution

The fourth proportional to 135,572.54, 187,089.95 and 75,143.30 is: 103,697.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,572.54 : 187,089.95 = 75,143.30 : x
  2. Step 2: Convert to fraction form
    135,572.54/187,089.95 = 75,143.30/x
  3. Step 3: Cross multiply
    135,572.54x = 187,089.95 × 75,143.30
  4. Step 4: Simplify right side
    135,572.54x = 14,058,555,492.24
  5. Step 5: Solve for x
    x = 14,058,555,492.24/135,572.54
  6. Step 6: Final answer
    x = 103,697.67

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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.