Home / 142,968.12-197,294.54-79,304.28

Finding the Fourth Proportional to 142,968.12, 197,294.54 and 79,304.28

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Solution

The fourth proportional to 142,968.12, 197,294.54 and 79,304.28 is: 109,439.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,968.12 : 197,294.54 = 79,304.28 : x
  2. Step 2: Convert to fraction form
    142,968.12/197,294.54 = 79,304.28/x
  3. Step 3: Cross multiply
    142,968.12x = 197,294.54 × 79,304.28
  4. Step 4: Simplify right side
    142,968.12x = 15,646,301,442.63
  5. Step 5: Solve for x
    x = 15,646,301,442.63/142,968.12
  6. Step 6: Final answer
    x = 109,439.09

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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.