Home / 135,823.40-187,434.45-75,393.89

Finding the Fourth Proportional to 135,823.40, 187,434.45 and 75,393.89

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Solution

The fourth proportional to 135,823.40, 187,434.45 and 75,393.89 is: 104,042.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,823.40 : 187,434.45 = 75,393.89 : x
  2. Step 2: Convert to fraction form
    135,823.40/187,434.45 = 75,393.89/x
  3. Step 3: Cross multiply
    135,823.40x = 187,434.45 × 75,393.89
  4. Step 4: Simplify right side
    135,823.40x = 14,131,411,368.34
  5. Step 5: Solve for x
    x = 14,131,411,368.34/135,823.40
  6. Step 6: Final answer
    x = 104,042.54

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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.