Home / 251,988.45-378,037.42-117,135.30

Finding the Fourth Proportional to 251,988.45, 378,037.42 and 117,135.30

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Solution

The fourth proportional to 251,988.45, 378,037.42 and 117,135.30 is: 175,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,988.45 : 378,037.42 = 117,135.30 : x
  2. Step 2: Convert to fraction form
    251,988.45/378,037.42 = 117,135.30/x
  3. Step 3: Cross multiply
    251,988.45x = 378,037.42 × 117,135.30
  4. Step 4: Simplify right side
    251,988.45x = 44,281,526,602.93
  5. Step 5: Solve for x
    x = 44,281,526,602.93/251,988.45
  6. Step 6: Final answer
    x = 175,728.40

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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.