Home / 135,071.43-186,389.25-74,641.50

Finding the Fourth Proportional to 135,071.43, 186,389.25 and 74,641.50

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Solution

The fourth proportional to 135,071.43, 186,389.25 and 74,641.50 is: 103,000.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,071.43 : 186,389.25 = 74,641.50 : x
  2. Step 2: Convert to fraction form
    135,071.43/186,389.25 = 74,641.50/x
  3. Step 3: Cross multiply
    135,071.43x = 186,389.25 × 74,641.50
  4. Step 4: Simplify right side
    135,071.43x = 13,912,373,203.88
  5. Step 5: Solve for x
    x = 13,912,373,203.88/135,071.43
  6. Step 6: Final answer
    x = 103,000.12

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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.