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Finding the Fourth Proportional to 115,365.52, 173,155.20 and 71,078.80

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Solution

The fourth proportional to 115,365.52, 173,155.20 and 71,078.80 is: 106,684.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,365.52 : 173,155.20 = 71,078.80 : x
  2. Step 2: Convert to fraction form
    115,365.52/173,155.20 = 71,078.80/x
  3. Step 3: Cross multiply
    115,365.52x = 173,155.20 × 71,078.80
  4. Step 4: Simplify right side
    115,365.52x = 12,307,663,829.76
  5. Step 5: Solve for x
    x = 12,307,663,829.76/115,365.52
  6. Step 6: Final answer
    x = 106,684.08

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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.