Home / 106,429,612.80-159,644,419.20-80,920,444.80

Finding the Fourth Proportional to 106,429,612.80, 159,644,419.20 and 80,920,444.80

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Solution

The fourth proportional to 106,429,612.80, 159,644,419.20 and 80,920,444.80 is: 121,380,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,429,612.80 : 159,644,419.20 = 80,920,444.80 : x
  2. Step 2: Convert to fraction form
    106,429,612.80/159,644,419.20 = 80,920,444.80/x
  3. Step 3: Cross multiply
    106,429,612.80x = 159,644,419.20 × 80,920,444.80
  4. Step 4: Simplify right side
    106,429,612.80x = 12,918,497,411,501,658
  5. Step 5: Solve for x
    x = 12,918,497,411,501,658/106,429,612.80
  6. Step 6: Final answer
    x = 121,380,667.20

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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.