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Finding the Fourth Proportional to 134,468.80, 201,703.20 and 128,563.90

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Solution

The fourth proportional to 134,468.80, 201,703.20 and 128,563.90 is: 192,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,468.80 : 201,703.20 = 128,563.90 : x
  2. Step 2: Convert to fraction form
    134,468.80/201,703.20 = 128,563.90/x
  3. Step 3: Cross multiply
    134,468.80x = 201,703.20 × 128,563.90
  4. Step 4: Simplify right side
    134,468.80x = 25,931,750,034.48
  5. Step 5: Solve for x
    x = 25,931,750,034.48/134,468.80
  6. Step 6: Final answer
    x = 192,845.85

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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.