Home / 135,733.53-187,312.43-79,155.84

Finding the Fourth Proportional to 135,733.53, 187,312.43 and 79,155.84

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Solution

The fourth proportional to 135,733.53, 187,312.43 and 79,155.84 is: 109,235.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,733.53 : 187,312.43 = 79,155.84 : x
  2. Step 2: Convert to fraction form
    135,733.53/187,312.43 = 79,155.84/x
  3. Step 3: Cross multiply
    135,733.53x = 187,312.43 × 79,155.84
  4. Step 4: Simplify right side
    135,733.53x = 14,826,872,739.09
  5. Step 5: Solve for x
    x = 14,826,872,739.09/135,733.53
  6. Step 6: Final answer
    x = 109,235.15

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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.