Home / 96,768,005.20-145,152,007.80-78,628,152.40

Finding the Fourth Proportional to 96,768,005.20, 145,152,007.80 and 78,628,152.40

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Solution

The fourth proportional to 96,768,005.20, 145,152,007.80 and 78,628,152.40 is: 117,942,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,768,005.20 : 145,152,007.80 = 78,628,152.40 : x
  2. Step 2: Convert to fraction form
    96,768,005.20/145,152,007.80 = 78,628,152.40/x
  3. Step 3: Cross multiply
    96,768,005.20x = 145,152,007.80 × 78,628,152.40
  4. Step 4: Simplify right side
    96,768,005.20x = 11,413,034,190,464,390
  5. Step 5: Solve for x
    x = 11,413,034,190,464,390/96,768,005.20
  6. Step 6: Final answer
    x = 117,942,228.60

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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.