Home / 142,435.13-196,543.46-78,764.27

Finding the Fourth Proportional to 142,435.13, 196,543.46 and 78,764.27

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Solution

The fourth proportional to 142,435.13, 196,543.46 and 78,764.27 is: 108,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,435.13 : 196,543.46 = 78,764.27 : x
  2. Step 2: Convert to fraction form
    142,435.13/196,543.46 = 78,764.27/x
  3. Step 3: Cross multiply
    142,435.13x = 196,543.46 × 78,764.27
  4. Step 4: Simplify right side
    142,435.13x = 15,480,600,773.64
  5. Step 5: Solve for x
    x = 15,480,600,773.64/142,435.13
  6. Step 6: Final answer
    x = 108,685.28

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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.