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Finding the Fourth Proportional to 167,478.36, 251,217.54 and 78,666.72

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Solution

The fourth proportional to 167,478.36, 251,217.54 and 78,666.72 is: 118,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,478.36 : 251,217.54 = 78,666.72 : x
  2. Step 2: Convert to fraction form
    167,478.36/251,217.54 = 78,666.72/x
  3. Step 3: Cross multiply
    167,478.36x = 251,217.54 × 78,666.72
  4. Step 4: Simplify right side
    167,478.36x = 19,762,459,878.27
  5. Step 5: Solve for x
    x = 19,762,459,878.27/167,478.36
  6. Step 6: Final answer
    x = 118,000.08

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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.