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Finding the Fourth Proportional to 118,187.40, 177,305.40 and 39,358.20

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Solution

The fourth proportional to 118,187.40, 177,305.40 and 39,358.20 is: 59,045.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,187.40 : 177,305.40 = 39,358.20 : x
  2. Step 2: Convert to fraction form
    118,187.40/177,305.40 = 39,358.20/x
  3. Step 3: Cross multiply
    118,187.40x = 177,305.40 × 39,358.20
  4. Step 4: Simplify right side
    118,187.40x = 6,978,421,394.28
  5. Step 5: Solve for x
    x = 6,978,421,394.28/118,187.40
  6. Step 6: Final answer
    x = 59,045.39

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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.