Home / 211,170.20-316,747.08-78,047.51

Finding the Fourth Proportional to 211,170.20, 316,747.08 and 78,047.51

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Solution

The fourth proportional to 211,170.20, 316,747.08 and 78,047.51 is: 117,068.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,170.20 : 316,747.08 = 78,047.51 : x
  2. Step 2: Convert to fraction form
    211,170.20/316,747.08 = 78,047.51/x
  3. Step 3: Cross multiply
    211,170.20x = 316,747.08 × 78,047.51
  4. Step 4: Simplify right side
    211,170.20x = 24,721,319,310.04
  5. Step 5: Solve for x
    x = 24,721,319,310.04/211,170.20
  6. Step 6: Final answer
    x = 117,068.22

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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.