Home / 106,540.21-147,020.87-58,140.91

Finding the Fourth Proportional to 106,540.21, 147,020.87 and 58,140.91

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Solution

The fourth proportional to 106,540.21, 147,020.87 and 58,140.91 is: 80,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,540.21 : 147,020.87 = 58,140.91 : x
  2. Step 2: Convert to fraction form
    106,540.21/147,020.87 = 58,140.91/x
  3. Step 3: Cross multiply
    106,540.21x = 147,020.87 × 58,140.91
  4. Step 4: Simplify right side
    106,540.21x = 8,547,926,948.59
  5. Step 5: Solve for x
    x = 8,547,926,948.59/106,540.21
  6. Step 6: Final answer
    x = 80,231.93

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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.