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Finding the Fourth Proportional to 124,078.60, 186,117.90 and 40,961.80

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Solution

The fourth proportional to 124,078.60, 186,117.90 and 40,961.80 is: 61,442.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,078.60 : 186,117.90 = 40,961.80 : x
  2. Step 2: Convert to fraction form
    124,078.60/186,117.90 = 40,961.80/x
  3. Step 3: Cross multiply
    124,078.60x = 186,117.90 × 40,961.80
  4. Step 4: Simplify right side
    124,078.60x = 7,623,724,196.22
  5. Step 5: Solve for x
    x = 7,623,724,196.22/124,078.60
  6. Step 6: Final answer
    x = 61,442.70

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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.