Home / 210,103.20-314,936.10-115,187.40

Finding the Fourth Proportional to 210,103.20, 314,936.10 and 115,187.40

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Solution

The fourth proportional to 210,103.20, 314,936.10 and 115,187.40 is: 172,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,103.20 : 314,936.10 = 115,187.40 : x
  2. Step 2: Convert to fraction form
    210,103.20/314,936.10 = 115,187.40/x
  3. Step 3: Cross multiply
    210,103.20x = 314,936.10 × 115,187.40
  4. Step 4: Simplify right side
    210,103.20x = 36,276,670,525.14
  5. Step 5: Solve for x
    x = 36,276,670,525.14/210,103.20
  6. Step 6: Final answer
    x = 172,661.20

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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.