Home / 185,129.64-255,480.12-100,246.72

Finding the Fourth Proportional to 185,129.64, 255,480.12 and 100,246.72

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Solution

The fourth proportional to 185,129.64, 255,480.12 and 100,246.72 is: 138,341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,129.64 : 255,480.12 = 100,246.72 : x
  2. Step 2: Convert to fraction form
    185,129.64/255,480.12 = 100,246.72/x
  3. Step 3: Cross multiply
    185,129.64x = 255,480.12 × 100,246.72
  4. Step 4: Simplify right side
    185,129.64x = 25,611,044,055.21
  5. Step 5: Solve for x
    x = 25,611,044,055.21/185,129.64
  6. Step 6: Final answer
    x = 138,341.13

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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.