Home / 142,975.92-197,310.60-78,448.08

Finding the Fourth Proportional to 142,975.92, 197,310.60 and 78,448.08

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Solution

The fourth proportional to 142,975.92, 197,310.60 and 78,448.08 is: 108,260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,975.92 : 197,310.60 = 78,448.08 : x
  2. Step 2: Convert to fraction form
    142,975.92/197,310.60 = 78,448.08/x
  3. Step 3: Cross multiply
    142,975.92x = 197,310.60 × 78,448.08
  4. Step 4: Simplify right side
    142,975.92x = 15,478,637,733.65
  5. Step 5: Solve for x
    x = 15,478,637,733.65/142,975.92
  6. Step 6: Final answer
    x = 108,260.45

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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.