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Finding the Fourth Proportional to 185,402.93, 255,856.34 and 100,520.21

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Solution

The fourth proportional to 185,402.93, 255,856.34 and 100,520.21 is: 138,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,402.93 : 255,856.34 = 100,520.21 : x
  2. Step 2: Convert to fraction form
    185,402.93/255,856.34 = 100,520.21/x
  3. Step 3: Cross multiply
    185,402.93x = 255,856.34 × 100,520.21
  4. Step 4: Simplify right side
    185,402.93x = 25,718,733,026.63
  5. Step 5: Solve for x
    x = 25,718,733,026.63/185,402.93
  6. Step 6: Final answer
    x = 138,718.05

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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.