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Finding the Fourth Proportional to 139,528.84, 192,548.80 and 75,866.68

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Solution

The fourth proportional to 139,528.84, 192,548.80 and 75,866.68 is: 104,695.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,528.84 : 192,548.80 = 75,866.68 : x
  2. Step 2: Convert to fraction form
    139,528.84/192,548.80 = 75,866.68/x
  3. Step 3: Cross multiply
    139,528.84x = 192,548.80 × 75,866.68
  4. Step 4: Simplify right side
    139,528.84x = 14,608,038,193.98
  5. Step 5: Solve for x
    x = 14,608,038,193.98/139,528.84
  6. Step 6: Final answer
    x = 104,695.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.