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Finding the Fourth Proportional to 139,888.32, 209,884.36 and 65,048.64

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Solution

The fourth proportional to 139,888.32, 209,884.36 and 65,048.64 is: 97,597.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,888.32 : 209,884.36 = 65,048.64 : x
  2. Step 2: Convert to fraction form
    139,888.32/209,884.36 = 65,048.64/x
  3. Step 3: Cross multiply
    139,888.32x = 209,884.36 × 65,048.64
  4. Step 4: Simplify right side
    139,888.32x = 13,652,692,175.27
  5. Step 5: Solve for x
    x = 13,652,692,175.27/139,888.32
  6. Step 6: Final answer
    x = 97,597.08

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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.