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Finding the Fourth Proportional to 100,192.32, 138,263.04 and 57,748.32

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Solution

The fourth proportional to 100,192.32, 138,263.04 and 57,748.32 is: 79,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,192.32 : 138,263.04 = 57,748.32 : x
  2. Step 2: Convert to fraction form
    100,192.32/138,263.04 = 57,748.32/x
  3. Step 3: Cross multiply
    100,192.32x = 138,263.04 × 57,748.32
  4. Step 4: Simplify right side
    100,192.32x = 7,984,458,278.09
  5. Step 5: Solve for x
    x = 7,984,458,278.09/100,192.32
  6. Step 6: Final answer
    x = 79,691.32

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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.