Home / 142,539.12-196,574.04-122,389.68

Finding the Fourth Proportional to 142,539.12, 196,574.04 and 122,389.68

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Solution

The fourth proportional to 142,539.12, 196,574.04 and 122,389.68 is: 168,786.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,539.12 : 196,574.04 = 122,389.68 : x
  2. Step 2: Convert to fraction form
    142,539.12/196,574.04 = 122,389.68/x
  3. Step 3: Cross multiply
    142,539.12x = 196,574.04 × 122,389.68
  4. Step 4: Simplify right side
    142,539.12x = 24,058,633,851.91
  5. Step 5: Solve for x
    x = 24,058,633,851.91/142,539.12
  6. Step 6: Final answer
    x = 168,786.18

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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.