Home / 142,965.14-197,315.55-79,323.44

Finding the Fourth Proportional to 142,965.14, 197,315.55 and 79,323.44

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Solution

The fourth proportional to 142,965.14, 197,315.55 and 79,323.44 is: 109,479.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,965.14 : 197,315.55 = 79,323.44 : x
  2. Step 2: Convert to fraction form
    142,965.14/197,315.55 = 79,323.44/x
  3. Step 3: Cross multiply
    142,965.14x = 197,315.55 × 79,323.44
  4. Step 4: Simplify right side
    142,965.14x = 15,651,748,684.78
  5. Step 5: Solve for x
    x = 15,651,748,684.78/142,965.14
  6. Step 6: Final answer
    x = 109,479.47

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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.