Home / 142,218.72-196,262.46-78,557.04

Finding the Fourth Proportional to 142,218.72, 196,262.46 and 78,557.04

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Solution

The fourth proportional to 142,218.72, 196,262.46 and 78,557.04 is: 108,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,218.72 : 196,262.46 = 78,557.04 : x
  2. Step 2: Convert to fraction form
    142,218.72/196,262.46 = 78,557.04/x
  3. Step 3: Cross multiply
    142,218.72x = 196,262.46 × 78,557.04
  4. Step 4: Simplify right side
    142,218.72x = 15,417,797,920.72
  5. Step 5: Solve for x
    x = 15,417,797,920.72/142,218.72
  6. Step 6: Final answer
    x = 108,409.06

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1.5x scale

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.