Home / 345,514.36-518,336.88-135,139

Finding the Fourth Proportional to 345,514.36, 518,336.88 and 135,139

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Solution

The fourth proportional to 345,514.36, 518,336.88 and 135,139 is: 202,734.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,514.36 : 518,336.88 = 135,139 : x
  2. Step 2: Convert to fraction form
    345,514.36/518,336.88 = 135,139/x
  3. Step 3: Cross multiply
    345,514.36x = 518,336.88 × 135,139
  4. Step 4: Simplify right side
    345,514.36x = 70,047,527,626.32
  5. Step 5: Solve for x
    x = 70,047,527,626.32/345,514.36
  6. Step 6: Final answer
    x = 202,734.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.