Home / 345,666.87-518,499.66-135,157.17

Finding the Fourth Proportional to 345,666.87, 518,499.66 and 135,157.17

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Solution

The fourth proportional to 345,666.87, 518,499.66 and 135,157.17 is: 202,735.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,666.87 : 518,499.66 = 135,157.17 : x
  2. Step 2: Convert to fraction form
    345,666.87/518,499.66 = 135,157.17/x
  3. Step 3: Cross multiply
    345,666.87x = 518,499.66 × 135,157.17
  4. Step 4: Simplify right side
    345,666.87x = 70,078,946,691.56
  5. Step 5: Solve for x
    x = 70,078,946,691.56/345,666.87
  6. Step 6: Final answer
    x = 202,735.50

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1.5x scale

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.