Home / 135,045.20-186,324.46-77,681.52

Finding the Fourth Proportional to 135,045.20, 186,324.46 and 77,681.52

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Solution

The fourth proportional to 135,045.20, 186,324.46 and 77,681.52 is: 107,178.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,045.20 : 186,324.46 = 77,681.52 : x
  2. Step 2: Convert to fraction form
    135,045.20/186,324.46 = 77,681.52/x
  3. Step 3: Cross multiply
    135,045.20x = 186,324.46 × 77,681.52
  4. Step 4: Simplify right side
    135,045.20x = 14,473,967,265.98
  5. Step 5: Solve for x
    x = 14,473,967,265.98/135,045.20
  6. Step 6: Final answer
    x = 107,178.69

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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.