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Finding the Fourth Proportional to 185,703.18, 256,269.66 and 100,820.22

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Solution

The fourth proportional to 185,703.18, 256,269.66 and 100,820.22 is: 139,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,703.18 : 256,269.66 = 100,820.22 : x
  2. Step 2: Convert to fraction form
    185,703.18/256,269.66 = 100,820.22/x
  3. Step 3: Cross multiply
    185,703.18x = 256,269.66 × 100,820.22
  4. Step 4: Simplify right side
    185,703.18x = 25,837,163,500.53
  5. Step 5: Solve for x
    x = 25,837,163,500.53/185,703.18
  6. Step 6: Final answer
    x = 139,131.51

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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.