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Finding the Fourth Proportional to 185,403.93, 255,857.72 and 100,521.21

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Solution

The fourth proportional to 185,403.93, 255,857.72 and 100,521.21 is: 138,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,403.93 : 255,857.72 = 100,521.21 : x
  2. Step 2: Convert to fraction form
    185,403.93/255,857.72 = 100,521.21/x
  3. Step 3: Cross multiply
    185,403.93x = 255,857.72 × 100,521.21
  4. Step 4: Simplify right side
    185,403.93x = 25,719,127,602.24
  5. Step 5: Solve for x
    x = 25,719,127,602.24/185,403.93
  6. Step 6: Final answer
    x = 138,719.43

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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.