Home / 185,008.05-255,311.12-100,125.11

Finding the Fourth Proportional to 185,008.05, 255,311.12 and 100,125.11

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Solution

The fourth proportional to 185,008.05, 255,311.12 and 100,125.11 is: 138,172.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,008.05 : 255,311.12 = 100,125.11 : x
  2. Step 2: Convert to fraction form
    185,008.05/255,311.12 = 100,125.11/x
  3. Step 3: Cross multiply
    185,008.05x = 255,311.12 × 100,125.11
  4. Step 4: Simplify right side
    185,008.05x = 25,563,054,862.81
  5. Step 5: Solve for x
    x = 25,563,054,862.81/185,008.05
  6. Step 6: Final answer
    x = 138,172.66

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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.