Home / 111,219,801.60-166,829,702.40-76,782,424.80

Finding the Fourth Proportional to 111,219,801.60, 166,829,702.40 and 76,782,424.80

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Solution

The fourth proportional to 111,219,801.60, 166,829,702.40 and 76,782,424.80 is: 115,173,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,219,801.60 : 166,829,702.40 = 76,782,424.80 : x
  2. Step 2: Convert to fraction form
    111,219,801.60/166,829,702.40 = 76,782,424.80/x
  3. Step 3: Cross multiply
    111,219,801.60x = 166,829,702.40 × 76,782,424.80
  4. Step 4: Simplify right side
    111,219,801.60x = 12,809,589,078,934,380
  5. Step 5: Solve for x
    x = 12,809,589,078,934,380/111,219,801.60
  6. Step 6: Final answer
    x = 115,173,637.20

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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.