Home / 142,543.60-196,707.36-78,884.08

Finding the Fourth Proportional to 142,543.60, 196,707.36 and 78,884.08

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Solution

The fourth proportional to 142,543.60, 196,707.36 and 78,884.08 is: 108,858.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,543.60 : 196,707.36 = 78,884.08 : x
  2. Step 2: Convert to fraction form
    142,543.60/196,707.36 = 78,884.08/x
  3. Step 3: Cross multiply
    142,543.60x = 196,707.36 × 78,884.08
  4. Step 4: Simplify right side
    142,543.60x = 15,517,079,122.83
  5. Step 5: Solve for x
    x = 15,517,079,122.83/142,543.60
  6. Step 6: Final answer
    x = 108,858.48

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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.