Home / 103,728.60-155,601.08-51,109.40

Finding the Fourth Proportional to 103,728.60, 155,601.08 and 51,109.40

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Solution

The fourth proportional to 103,728.60, 155,601.08 and 51,109.40 is: 76,668.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,728.60 : 155,601.08 = 51,109.40 : x
  2. Step 2: Convert to fraction form
    103,728.60/155,601.08 = 51,109.40/x
  3. Step 3: Cross multiply
    103,728.60x = 155,601.08 × 51,109.40
  4. Step 4: Simplify right side
    103,728.60x = 7,952,677,838.15
  5. Step 5: Solve for x
    x = 7,952,677,838.15/103,728.60
  6. Step 6: Final answer
    x = 76,668.13

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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.