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Finding the Fourth Proportional to 100,766.25, 139,057.56 and 56,054.25

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Solution

The fourth proportional to 100,766.25, 139,057.56 and 56,054.25 is: 77,354.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,766.25 : 139,057.56 = 56,054.25 : x
  2. Step 2: Convert to fraction form
    100,766.25/139,057.56 = 56,054.25/x
  3. Step 3: Cross multiply
    100,766.25x = 139,057.56 × 56,054.25
  4. Step 4: Simplify right side
    100,766.25x = 7,794,767,232.63
  5. Step 5: Solve for x
    x = 7,794,767,232.63/100,766.25
  6. Step 6: Final answer
    x = 77,354.94

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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.