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Finding the Fourth Proportional to 118,880.40, 178,347.90 and 39,992.58

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Solution

The fourth proportional to 118,880.40, 178,347.90 and 39,992.58 is: 59,998.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,880.40 : 178,347.90 = 39,992.58 : x
  2. Step 2: Convert to fraction form
    118,880.40/178,347.90 = 39,992.58/x
  3. Step 3: Cross multiply
    118,880.40x = 178,347.90 × 39,992.58
  4. Step 4: Simplify right side
    118,880.40x = 7,132,592,658.58
  5. Step 5: Solve for x
    x = 7,132,592,658.58/118,880.40
  6. Step 6: Final answer
    x = 59,998.05

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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.