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Finding the Fourth Proportional to 79,207.40, 118,833.12 and 64,379.60

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Solution

The fourth proportional to 79,207.40, 118,833.12 and 64,379.60 is: 96,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,207.40 : 118,833.12 = 64,379.60 : x
  2. Step 2: Convert to fraction form
    79,207.40/118,833.12 = 64,379.60/x
  3. Step 3: Cross multiply
    79,207.40x = 118,833.12 × 64,379.60
  4. Step 4: Simplify right side
    79,207.40x = 7,650,428,732.35
  5. Step 5: Solve for x
    x = 7,650,428,732.35/79,207.40
  6. Step 6: Final answer
    x = 96,587.30

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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.