Home / 135,642.42-187,178.91-75,209.46

Finding the Fourth Proportional to 135,642.42, 187,178.91 and 75,209.46

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Solution

The fourth proportional to 135,642.42, 187,178.91 and 75,209.46 is: 103,784.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,642.42 : 187,178.91 = 75,209.46 : x
  2. Step 2: Convert to fraction form
    135,642.42/187,178.91 = 75,209.46/x
  3. Step 3: Cross multiply
    135,642.42x = 187,178.91 × 75,209.46
  4. Step 4: Simplify right side
    135,642.42x = 14,077,624,744.49
  5. Step 5: Solve for x
    x = 14,077,624,744.49/135,642.42
  6. Step 6: Final answer
    x = 103,784.82

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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.