Home / 165,179,945.60-247,486,483.20-78,732,209.60

Finding the Fourth Proportional to 165,179,945.60, 247,486,483.20 and 78,732,209.60

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Solution

The fourth proportional to 165,179,945.60, 247,486,483.20 and 78,732,209.60 is: 117,963,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,179,945.60 : 247,486,483.20 = 78,732,209.60 : x
  2. Step 2: Convert to fraction form
    165,179,945.60/247,486,483.20 = 78,732,209.60/x
  3. Step 3: Cross multiply
    165,179,945.60x = 247,486,483.20 × 78,732,209.60
  4. Step 4: Simplify right side
    165,179,945.60x = 19,485,157,668,469,276
  5. Step 5: Solve for x
    x = 19,485,157,668,469,276/165,179,945.60
  6. Step 6: Final answer
    x = 117,963,216.40

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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.