Home / 142,685.12-196,903.05-79,021.55

Finding the Fourth Proportional to 142,685.12, 196,903.05 and 79,021.55

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Solution

The fourth proportional to 142,685.12, 196,903.05 and 79,021.55 is: 109,048.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,685.12 : 196,903.05 = 79,021.55 : x
  2. Step 2: Convert to fraction form
    142,685.12/196,903.05 = 79,021.55/x
  3. Step 3: Cross multiply
    142,685.12x = 196,903.05 × 79,021.55
  4. Step 4: Simplify right side
    142,685.12x = 15,559,584,210.73
  5. Step 5: Solve for x
    x = 15,559,584,210.73/142,685.12
  6. Step 6: Final answer
    x = 109,048.40

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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.