Home / 135,858.28-187,475.76-75,428.91

Finding the Fourth Proportional to 135,858.28, 187,475.76 and 75,428.91

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Solution

The fourth proportional to 135,858.28, 187,475.76 and 75,428.91 is: 104,087.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,858.28 : 187,475.76 = 75,428.91 : x
  2. Step 2: Convert to fraction form
    135,858.28/187,475.76 = 75,428.91/x
  3. Step 3: Cross multiply
    135,858.28x = 187,475.76 × 75,428.91
  4. Step 4: Simplify right side
    135,858.28x = 14,141,091,851.08
  5. Step 5: Solve for x
    x = 14,141,091,851.08/135,858.28
  6. Step 6: Final answer
    x = 104,087.08

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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.