Home / 189,400.21-261,417.02-108,874.45

Finding the Fourth Proportional to 189,400.21, 261,417.02 and 108,874.45

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Solution

The fourth proportional to 189,400.21, 261,417.02 and 108,874.45 is: 150,272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,400.21 : 261,417.02 = 108,874.45 : x
  2. Step 2: Convert to fraction form
    189,400.21/261,417.02 = 108,874.45/x
  3. Step 3: Cross multiply
    189,400.21x = 261,417.02 × 108,874.45
  4. Step 4: Simplify right side
    189,400.21x = 28,461,634,273.14
  5. Step 5: Solve for x
    x = 28,461,634,273.14/189,400.21
  6. Step 6: Final answer
    x = 150,272.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.