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Finding the Fourth Proportional to 128,386.53, 192,574.53 and 33,615.18

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Solution

The fourth proportional to 128,386.53, 192,574.53 and 33,615.18 is: 50,421.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,386.53 : 192,574.53 = 33,615.18 : x
  2. Step 2: Convert to fraction form
    128,386.53/192,574.53 = 33,615.18/x
  3. Step 3: Cross multiply
    128,386.53x = 192,574.53 × 33,615.18
  4. Step 4: Simplify right side
    128,386.53x = 6,473,427,489.37
  5. Step 5: Solve for x
    x = 6,473,427,489.37/128,386.53
  6. Step 6: Final answer
    x = 50,421.39

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1.5x scale

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.