Home / 345,159.20-517,799.60-142,754.72

Finding the Fourth Proportional to 345,159.20, 517,799.60 and 142,754.72

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Solution

The fourth proportional to 345,159.20, 517,799.60 and 142,754.72 is: 214,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,159.20 : 517,799.60 = 142,754.72 : x
  2. Step 2: Convert to fraction form
    345,159.20/517,799.60 = 142,754.72/x
  3. Step 3: Cross multiply
    345,159.20x = 517,799.60 × 142,754.72
  4. Step 4: Simplify right side
    345,159.20x = 73,918,336,914.11
  5. Step 5: Solve for x
    x = 73,918,336,914.11/345,159.20
  6. Step 6: Final answer
    x = 214,157.23

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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.