Home / 345,845.15-518,816.27-121,154.15

Finding the Fourth Proportional to 345,845.15, 518,816.27 and 121,154.15

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Solution

The fourth proportional to 345,845.15, 518,816.27 and 121,154.15 is: 181,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,845.15 : 518,816.27 = 121,154.15 : x
  2. Step 2: Convert to fraction form
    345,845.15/518,816.27 = 121,154.15/x
  3. Step 3: Cross multiply
    345,845.15x = 518,816.27 × 121,154.15
  4. Step 4: Simplify right side
    345,845.15x = 62,856,740,998.17
  5. Step 5: Solve for x
    x = 62,856,740,998.17/345,845.15
  6. Step 6: Final answer
    x = 181,748.22

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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.