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Finding the Fourth Proportional to 100,797.34, 139,108.98 and 55,484.32

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Solution

The fourth proportional to 100,797.34, 139,108.98 and 55,484.32 is: 76,573.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,797.34 : 139,108.98 = 55,484.32 : x
  2. Step 2: Convert to fraction form
    100,797.34/139,108.98 = 55,484.32/x
  3. Step 3: Cross multiply
    100,797.34x = 139,108.98 × 55,484.32
  4. Step 4: Simplify right side
    100,797.34x = 7,718,367,161.19
  5. Step 5: Solve for x
    x = 7,718,367,161.19/100,797.34
  6. Step 6: Final answer
    x = 76,573.12

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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.