Home / 142,372.13-196,477.64-78,714.02

Finding the Fourth Proportional to 142,372.13, 196,477.64 and 78,714.02

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Solution

The fourth proportional to 142,372.13, 196,477.64 and 78,714.02 is: 108,627.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,372.13 : 196,477.64 = 78,714.02 : x
  2. Step 2: Convert to fraction form
    142,372.13/196,477.64 = 78,714.02/x
  3. Step 3: Cross multiply
    142,372.13x = 196,477.64 × 78,714.02
  4. Step 4: Simplify right side
    142,372.13x = 15,465,545,277.31
  5. Step 5: Solve for x
    x = 15,465,545,277.31/142,372.13
  6. Step 6: Final answer
    x = 108,627.62

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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.