Home / 142,965.39-197,315.90-79,323.69

Finding the Fourth Proportional to 142,965.39, 197,315.90 and 79,323.69

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Solution

The fourth proportional to 142,965.39, 197,315.90 and 79,323.69 is: 109,479.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,965.39 : 197,315.90 = 79,323.69 : x
  2. Step 2: Convert to fraction form
    142,965.39/197,315.90 = 79,323.69/x
  3. Step 3: Cross multiply
    142,965.39x = 197,315.90 × 79,323.69
  4. Step 4: Simplify right side
    142,965.39x = 15,651,825,283.67
  5. Step 5: Solve for x
    x = 15,651,825,283.67/142,965.39
  6. Step 6: Final answer
    x = 109,479.82

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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.