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Finding the Fourth Proportional to 115,204.60, 158,928.02 and 67,428.36

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Solution

The fourth proportional to 115,204.60, 158,928.02 and 67,428.36 is: 93,019.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,204.60 : 158,928.02 = 67,428.36 : x
  2. Step 2: Convert to fraction form
    115,204.60/158,928.02 = 67,428.36/x
  3. Step 3: Cross multiply
    115,204.60x = 158,928.02 × 67,428.36
  4. Step 4: Simplify right side
    115,204.60x = 10,716,255,746.65
  5. Step 5: Solve for x
    x = 10,716,255,746.65/115,204.60
  6. Step 6: Final answer
    x = 93,019.34

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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.