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Finding the Fourth Proportional to 139,848.12, 209,568.06 and 69,630.84

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Solution

The fourth proportional to 139,848.12, 209,568.06 and 69,630.84 is: 104,344.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,848.12 : 209,568.06 = 69,630.84 : x
  2. Step 2: Convert to fraction form
    139,848.12/209,568.06 = 69,630.84/x
  3. Step 3: Cross multiply
    139,848.12x = 209,568.06 × 69,630.84
  4. Step 4: Simplify right side
    139,848.12x = 14,592,400,054.97
  5. Step 5: Solve for x
    x = 14,592,400,054.97/139,848.12
  6. Step 6: Final answer
    x = 104,344.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.