Home / 142,412.49-196,533.18-78,754.41

Finding the Fourth Proportional to 142,412.49, 196,533.18 and 78,754.41

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Solution

The fourth proportional to 142,412.49, 196,533.18 and 78,754.41 is: 108,683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,412.49 : 196,533.18 = 78,754.41 : x
  2. Step 2: Convert to fraction form
    142,412.49/196,533.18 = 78,754.41/x
  3. Step 3: Cross multiply
    142,412.49x = 196,533.18 × 78,754.41
  4. Step 4: Simplify right side
    142,412.49x = 15,477,854,636.32
  5. Step 5: Solve for x
    x = 15,477,854,636.32/142,412.49
  6. Step 6: Final answer
    x = 108,683.27

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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.