Home / 135,814.38-187,422-75,384.90

Finding the Fourth Proportional to 135,814.38, 187,422 and 75,384.90

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Solution

The fourth proportional to 135,814.38, 187,422 and 75,384.90 is: 104,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,814.38 : 187,422 = 75,384.90 : x
  2. Step 2: Convert to fraction form
    135,814.38/187,422 = 75,384.90/x
  3. Step 3: Cross multiply
    135,814.38x = 187,422 × 75,384.90
  4. Step 4: Simplify right side
    135,814.38x = 14,128,788,727.80
  5. Step 5: Solve for x
    x = 14,128,788,727.80/135,814.38
  6. Step 6: Final answer
    x = 104,030.14

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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.