Home / 107,913.20-161,869.80-55,425.20

Finding the Fourth Proportional to 107,913.20, 161,869.80 and 55,425.20

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Solution

The fourth proportional to 107,913.20, 161,869.80 and 55,425.20 is: 83,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,913.20 : 161,869.80 = 55,425.20 : x
  2. Step 2: Convert to fraction form
    107,913.20/161,869.80 = 55,425.20/x
  3. Step 3: Cross multiply
    107,913.20x = 161,869.80 × 55,425.20
  4. Step 4: Simplify right side
    107,913.20x = 8,971,666,038.96
  5. Step 5: Solve for x
    x = 8,971,666,038.96/107,913.20
  6. Step 6: Final answer
    x = 83,137.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.