Home / 135,719.40-187,283.95-75,289.89

Finding the Fourth Proportional to 135,719.40, 187,283.95 and 75,289.89

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Solution

The fourth proportional to 135,719.40, 187,283.95 and 75,289.89 is: 103,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,719.40 : 187,283.95 = 75,289.89 : x
  2. Step 2: Convert to fraction form
    135,719.40/187,283.95 = 75,289.89/x
  3. Step 3: Cross multiply
    135,719.40x = 187,283.95 × 75,289.89
  4. Step 4: Simplify right side
    135,719.40x = 14,100,588,244.99
  5. Step 5: Solve for x
    x = 14,100,588,244.99/135,719.40
  6. Step 6: Final answer
    x = 103,895.16

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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.