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Finding the Fourth Proportional to 167,614.80, 251,256.12 and 78,709.15

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Solution

The fourth proportional to 167,614.80, 251,256.12 and 78,709.15 is: 117,985.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,614.80 : 251,256.12 = 78,709.15 : x
  2. Step 2: Convert to fraction form
    167,614.80/251,256.12 = 78,709.15/x
  3. Step 3: Cross multiply
    167,614.80x = 251,256.12 × 78,709.15
  4. Step 4: Simplify right side
    167,614.80x = 19,776,155,637.50
  5. Step 5: Solve for x
    x = 19,776,155,637.50/167,614.80
  6. Step 6: Final answer
    x = 117,985.74

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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.