Home / 135,855.42-187,429.02-100,130.82

Finding the Fourth Proportional to 135,855.42, 187,429.02 and 100,130.82

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Solution

The fourth proportional to 135,855.42, 187,429.02 and 100,130.82 is: 138,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,855.42 : 187,429.02 = 100,130.82 : x
  2. Step 2: Convert to fraction form
    135,855.42/187,429.02 = 100,130.82/x
  3. Step 3: Cross multiply
    135,855.42x = 187,429.02 × 100,130.82
  4. Step 4: Simplify right side
    135,855.42x = 18,767,421,464.40
  5. Step 5: Solve for x
    x = 18,767,421,464.40/135,855.42
  6. Step 6: Final answer
    x = 138,142.60

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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.