Home / 96,770,131.20-145,155,196.80-78,630,278.40

Finding the Fourth Proportional to 96,770,131.20, 145,155,196.80 and 78,630,278.40

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Solution

The fourth proportional to 96,770,131.20, 145,155,196.80 and 78,630,278.40 is: 117,945,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,770,131.20 : 145,155,196.80 = 78,630,278.40 : x
  2. Step 2: Convert to fraction form
    96,770,131.20/145,155,196.80 = 78,630,278.40/x
  3. Step 3: Cross multiply
    96,770,131.20x = 145,155,196.80 × 78,630,278.40
  4. Step 4: Simplify right side
    96,770,131.20x = 11,413,593,535,590,790
  5. Step 5: Solve for x
    x = 11,413,593,535,590,790/96,770,131.20
  6. Step 6: Final answer
    x = 117,945,417.60

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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.