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Finding the Fourth Proportional to 136,459.68, 204,880.80 and 69,947.52

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Solution

The fourth proportional to 136,459.68, 204,880.80 and 69,947.52 is: 105,019.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,459.68 : 204,880.80 = 69,947.52 : x
  2. Step 2: Convert to fraction form
    136,459.68/204,880.80 = 69,947.52/x
  3. Step 3: Cross multiply
    136,459.68x = 204,880.80 × 69,947.52
  4. Step 4: Simplify right side
    136,459.68x = 14,330,903,855.62
  5. Step 5: Solve for x
    x = 14,330,903,855.62/136,459.68
  6. Step 6: Final answer
    x = 105,019.33

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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.