Home / 210,091.40-315,178.04-67,971.84

Finding the Fourth Proportional to 210,091.40, 315,178.04 and 67,971.84

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Solution

The fourth proportional to 210,091.40, 315,178.04 and 67,971.84 is: 101,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,091.40 : 315,178.04 = 67,971.84 : x
  2. Step 2: Convert to fraction form
    210,091.40/315,178.04 = 67,971.84/x
  3. Step 3: Cross multiply
    210,091.40x = 315,178.04 × 67,971.84
  4. Step 4: Simplify right side
    210,091.40x = 21,423,231,306.39
  5. Step 5: Solve for x
    x = 21,423,231,306.39/210,091.40
  6. Step 6: Final answer
    x = 101,971.01

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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.