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Finding the Fourth Proportional to 139,444.50, 209,925.48 and 127,044.21

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Solution

The fourth proportional to 139,444.50, 209,925.48 and 127,044.21 is: 191,257.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,444.50 : 209,925.48 = 127,044.21 : x
  2. Step 2: Convert to fraction form
    139,444.50/209,925.48 = 127,044.21/x
  3. Step 3: Cross multiply
    139,444.50x = 209,925.48 × 127,044.21
  4. Step 4: Simplify right side
    139,444.50x = 26,669,816,765.47
  5. Step 5: Solve for x
    x = 26,669,816,765.47/139,444.50
  6. Step 6: Final answer
    x = 191,257.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.