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Finding the Fourth Proportional to 185,703.49, 256,272.42 and 100,820.76

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Solution

The fourth proportional to 185,703.49, 256,272.42 and 100,820.76 is: 139,133.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,703.49 : 256,272.42 = 100,820.76 : x
  2. Step 2: Convert to fraction form
    185,703.49/256,272.42 = 100,820.76/x
  3. Step 3: Cross multiply
    185,703.49x = 256,272.42 × 100,820.76
  4. Step 4: Simplify right side
    185,703.49x = 25,837,580,151.44
  5. Step 5: Solve for x
    x = 25,837,580,151.44/185,703.49
  6. Step 6: Final answer
    x = 139,133.52

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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.