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Finding the Fourth Proportional to 135,670.34, 187,212.69 and 75,240.79

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Solution

The fourth proportional to 135,670.34, 187,212.69 and 75,240.79 is: 103,825.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,670.34 : 187,212.69 = 75,240.79 : x
  2. Step 2: Convert to fraction form
    135,670.34/187,212.69 = 75,240.79/x
  3. Step 3: Cross multiply
    135,670.34x = 187,212.69 × 75,240.79
  4. Step 4: Simplify right side
    135,670.34x = 14,086,030,225.59
  5. Step 5: Solve for x
    x = 14,086,030,225.59/135,670.34
  6. Step 6: Final answer
    x = 103,825.43

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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.