Home / 103,913.58-155,588.78-53,888.76

Finding the Fourth Proportional to 103,913.58, 155,588.78 and 53,888.76

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Solution

The fourth proportional to 103,913.58, 155,588.78 and 53,888.76 is: 80,687.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,913.58 : 155,588.78 = 53,888.76 : x
  2. Step 2: Convert to fraction form
    103,913.58/155,588.78 = 53,888.76/x
  3. Step 3: Cross multiply
    103,913.58x = 155,588.78 × 53,888.76
  4. Step 4: Simplify right side
    103,913.58x = 8,384,486,424.11
  5. Step 5: Solve for x
    x = 8,384,486,424.11/103,913.58
  6. Step 6: Final answer
    x = 80,687.11

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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.