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Finding the Fourth Proportional to 100,755.33, 139,042.35 and 55,432.35

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Solution

The fourth proportional to 100,755.33, 139,042.35 and 55,432.35 is: 76,496.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,755.33 : 139,042.35 = 55,432.35 : x
  2. Step 2: Convert to fraction form
    100,755.33/139,042.35 = 55,432.35/x
  3. Step 3: Cross multiply
    100,755.33x = 139,042.35 × 55,432.35
  4. Step 4: Simplify right side
    100,755.33x = 7,707,444,210.02
  5. Step 5: Solve for x
    x = 7,707,444,210.02/100,755.33
  6. Step 6: Final answer
    x = 76,496.64

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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.