Home / 142,982.34-197,339.12-79,340.64

Finding the Fourth Proportional to 142,982.34, 197,339.12 and 79,340.64

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Solution

The fourth proportional to 142,982.34, 197,339.12 and 79,340.64 is: 109,503.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,982.34 : 197,339.12 = 79,340.64 : x
  2. Step 2: Convert to fraction form
    142,982.34/197,339.12 = 79,340.64/x
  3. Step 3: Cross multiply
    142,982.34x = 197,339.12 × 79,340.64
  4. Step 4: Simplify right side
    142,982.34x = 15,657,012,077.84
  5. Step 5: Solve for x
    x = 15,657,012,077.84/142,982.34
  6. Step 6: Final answer
    x = 109,503.12

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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.