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Finding the Fourth Proportional to 139,473.58, 209,211.84 and 55,254.25

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Solution

The fourth proportional to 139,473.58, 209,211.84 and 55,254.25 is: 82,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,473.58 : 209,211.84 = 55,254.25 : x
  2. Step 2: Convert to fraction form
    139,473.58/209,211.84 = 55,254.25/x
  3. Step 3: Cross multiply
    139,473.58x = 209,211.84 × 55,254.25
  4. Step 4: Simplify right side
    139,473.58x = 11,559,842,264.26
  5. Step 5: Solve for x
    x = 11,559,842,264.26/139,473.58
  6. Step 6: Final answer
    x = 82,881.95

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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.