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Finding the Fourth Proportional to 139,888.92, 209,669.11 and 64,851.13

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Solution

The fourth proportional to 139,888.92, 209,669.11 and 64,851.13 is: 97,200.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,888.92 : 209,669.11 = 64,851.13 : x
  2. Step 2: Convert to fraction form
    139,888.92/209,669.11 = 64,851.13/x
  3. Step 3: Cross multiply
    139,888.92x = 209,669.11 × 64,851.13
  4. Step 4: Simplify right side
    139,888.92x = 13,597,278,809.55
  5. Step 5: Solve for x
    x = 13,597,278,809.55/139,888.92
  6. Step 6: Final answer
    x = 97,200.54

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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.