Home / 127,939,644.80-191,909,467.20-73,520,086.40

Finding the Fourth Proportional to 127,939,644.80, 191,909,467.20 and 73,520,086.40

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Solution

The fourth proportional to 127,939,644.80, 191,909,467.20 and 73,520,086.40 is: 110,280,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939,644.80 : 191,909,467.20 = 73,520,086.40 : x
  2. Step 2: Convert to fraction form
    127,939,644.80/191,909,467.20 = 73,520,086.40/x
  3. Step 3: Cross multiply
    127,939,644.80x = 191,909,467.20 × 73,520,086.40
  4. Step 4: Simplify right side
    127,939,644.80x = 14,109,200,609,521,966
  5. Step 5: Solve for x
    x = 14,109,200,609,521,966/127,939,644.80
  6. Step 6: Final answer
    x = 110,280,129.60

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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.