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Finding the Fourth Proportional to 135,510.77, 187,005.21 and 75,080.93

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Solution

The fourth proportional to 135,510.77, 187,005.21 and 75,080.93 is: 103,611.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,510.77 : 187,005.21 = 75,080.93 : x
  2. Step 2: Convert to fraction form
    135,510.77/187,005.21 = 75,080.93/x
  3. Step 3: Cross multiply
    135,510.77x = 187,005.21 × 75,080.93
  4. Step 4: Simplify right side
    135,510.77x = 14,040,523,865.07
  5. Step 5: Solve for x
    x = 14,040,523,865.07/135,510.77
  6. Step 6: Final answer
    x = 103,611.86

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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.