Home / 142,065.23-196,043.83-77,532.80

Finding the Fourth Proportional to 142,065.23, 196,043.83 and 77,532.80

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Solution

The fourth proportional to 142,065.23, 196,043.83 and 77,532.80 is: 106,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,065.23 : 196,043.83 = 77,532.80 : x
  2. Step 2: Convert to fraction form
    142,065.23/196,043.83 = 77,532.80/x
  3. Step 3: Cross multiply
    142,065.23x = 196,043.83 × 77,532.80
  4. Step 4: Simplify right side
    142,065.23x = 15,199,825,888.57
  5. Step 5: Solve for x
    x = 15,199,825,888.57/142,065.23
  6. Step 6: Final answer
    x = 106,991.88

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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.