Home / 135,442.85-186,905.63-75,009.89

Finding the Fourth Proportional to 135,442.85, 186,905.63 and 75,009.89

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Solution

The fourth proportional to 135,442.85, 186,905.63 and 75,009.89 is: 103,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,442.85 : 186,905.63 = 75,009.89 : x
  2. Step 2: Convert to fraction form
    135,442.85/186,905.63 = 75,009.89/x
  3. Step 3: Cross multiply
    135,442.85x = 186,905.63 × 75,009.89
  4. Step 4: Simplify right side
    135,442.85x = 14,019,770,371.63
  5. Step 5: Solve for x
    x = 14,019,770,371.63/135,442.85
  6. Step 6: Final answer
    x = 103,510.60

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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.