Home / 142,579.52-196,756.80-78,913.52

Finding the Fourth Proportional to 142,579.52, 196,756.80 and 78,913.52

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Solution

The fourth proportional to 142,579.52, 196,756.80 and 78,913.52 is: 108,899.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,579.52 : 196,756.80 = 78,913.52 : x
  2. Step 2: Convert to fraction form
    142,579.52/196,756.80 = 78,913.52/x
  3. Step 3: Cross multiply
    142,579.52x = 196,756.80 × 78,913.52
  4. Step 4: Simplify right side
    142,579.52x = 15,526,771,671.94
  5. Step 5: Solve for x
    x = 15,526,771,671.94/142,579.52
  6. Step 6: Final answer
    x = 108,899.03

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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.