Home / 96,724.32-133,412.40-78,819.36

Finding the Fourth Proportional to 96,724.32, 133,412.40 and 78,819.36

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Solution

The fourth proportional to 96,724.32, 133,412.40 and 78,819.36 is: 108,715.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,724.32 : 133,412.40 = 78,819.36 : x
  2. Step 2: Convert to fraction form
    96,724.32/133,412.40 = 78,819.36/x
  3. Step 3: Cross multiply
    96,724.32x = 133,412.40 × 78,819.36
  4. Step 4: Simplify right side
    96,724.32x = 10,515,479,984.06
  5. Step 5: Solve for x
    x = 10,515,479,984.06/96,724.32
  6. Step 6: Final answer
    x = 108,715.99

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1.5x scale

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.