Home / 103,904.19-155,601.14-66,353.40

Finding the Fourth Proportional to 103,904.19, 155,601.14 and 66,353.40

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Solution

The fourth proportional to 103,904.19, 155,601.14 and 66,353.40 is: 99,367.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,904.19 : 155,601.14 = 66,353.40 : x
  2. Step 2: Convert to fraction form
    103,904.19/155,601.14 = 66,353.40/x
  3. Step 3: Cross multiply
    103,904.19x = 155,601.14 × 66,353.40
  4. Step 4: Simplify right side
    103,904.19x = 10,324,664,351.11
  5. Step 5: Solve for x
    x = 10,324,664,351.11/103,904.19
  6. Step 6: Final answer
    x = 99,367.16

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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.