Home / 210,996.40-316,647.12-82,931.80

Finding the Fourth Proportional to 210,996.40, 316,647.12 and 82,931.80

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Solution

The fourth proportional to 210,996.40, 316,647.12 and 82,931.80 is: 124,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,996.40 : 316,647.12 = 82,931.80 : x
  2. Step 2: Convert to fraction form
    210,996.40/316,647.12 = 82,931.80/x
  3. Step 3: Cross multiply
    210,996.40x = 316,647.12 × 82,931.80
  4. Step 4: Simplify right side
    210,996.40x = 26,260,115,626.42
  5. Step 5: Solve for x
    x = 26,260,115,626.42/210,996.40
  6. Step 6: Final answer
    x = 124,457.65

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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.