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Finding the Fourth Proportional to 100,598.12, 138,773.35 and 68,334.40

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Solution

The fourth proportional to 100,598.12, 138,773.35 and 68,334.40 is: 94,266.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,598.12 : 138,773.35 = 68,334.40 : x
  2. Step 2: Convert to fraction form
    100,598.12/138,773.35 = 68,334.40/x
  3. Step 3: Cross multiply
    100,598.12x = 138,773.35 × 68,334.40
  4. Step 4: Simplify right side
    100,598.12x = 9,482,993,608.24
  5. Step 5: Solve for x
    x = 9,482,993,608.24/100,598.12
  6. Step 6: Final answer
    x = 94,266.11

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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.