Home / 142,066.80-212,992.20-71,996.40

Finding the Fourth Proportional to 142,066.80, 212,992.20 and 71,996.40

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Solution

The fourth proportional to 142,066.80, 212,992.20 and 71,996.40 is: 107,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,066.80 : 212,992.20 = 71,996.40 : x
  2. Step 2: Convert to fraction form
    142,066.80/212,992.20 = 71,996.40/x
  3. Step 3: Cross multiply
    142,066.80x = 212,992.20 × 71,996.40
  4. Step 4: Simplify right side
    142,066.80x = 15,334,671,628.08
  5. Step 5: Solve for x
    x = 15,334,671,628.08/142,066.80
  6. Step 6: Final answer
    x = 107,939.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.