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Finding the Fourth Proportional to 135,567.61, 187,089.61 and 75,139.59

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Solution

The fourth proportional to 135,567.61, 187,089.61 and 75,139.59 is: 103,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,567.61 : 187,089.61 = 75,139.59 : x
  2. Step 2: Convert to fraction form
    135,567.61/187,089.61 = 75,139.59/x
  3. Step 3: Cross multiply
    135,567.61x = 187,089.61 × 75,139.59
  4. Step 4: Simplify right side
    135,567.61x = 14,057,836,588.66
  5. Step 5: Solve for x
    x = 14,057,836,588.66/135,567.61
  6. Step 6: Final answer
    x = 103,696.13

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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.