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Finding the Fourth Proportional to 136,087.97, 187,811.87 and 75,663.59

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Solution

The fourth proportional to 136,087.97, 187,811.87 and 75,663.59 is: 104,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,087.97 : 187,811.87 = 75,663.59 : x
  2. Step 2: Convert to fraction form
    136,087.97/187,811.87 = 75,663.59/x
  3. Step 3: Cross multiply
    136,087.97x = 187,811.87 × 75,663.59
  4. Step 4: Simplify right side
    136,087.97x = 14,210,519,011.44
  5. Step 5: Solve for x
    x = 14,210,519,011.44/136,087.97
  6. Step 6: Final answer
    x = 104,421.57

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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.