Home / 135,637.20-203,455.80-129,878.10

Finding the Fourth Proportional to 135,637.20, 203,455.80 and 129,878.10

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Solution

The fourth proportional to 135,637.20, 203,455.80 and 129,878.10 is: 194,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,637.20 : 203,455.80 = 129,878.10 : x
  2. Step 2: Convert to fraction form
    135,637.20/203,455.80 = 129,878.10/x
  3. Step 3: Cross multiply
    135,637.20x = 203,455.80 × 129,878.10
  4. Step 4: Simplify right side
    135,637.20x = 26,424,452,737.98
  5. Step 5: Solve for x
    x = 26,424,452,737.98/135,637.20
  6. Step 6: Final answer
    x = 194,817.15

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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.