Home / 106,429,787.80-159,644,681.70-80,920,619.80

Finding the Fourth Proportional to 106,429,787.80, 159,644,681.70 and 80,920,619.80

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Solution

The fourth proportional to 106,429,787.80, 159,644,681.70 and 80,920,619.80 is: 121,380,929.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,429,787.80 : 159,644,681.70 = 80,920,619.80 : x
  2. Step 2: Convert to fraction form
    106,429,787.80/159,644,681.70 = 80,920,619.80/x
  3. Step 3: Cross multiply
    106,429,787.80x = 159,644,681.70 × 80,920,619.80
  4. Step 4: Simplify right side
    106,429,787.80x = 12,918,546,590,937,716
  5. Step 5: Solve for x
    x = 12,918,546,590,937,716/106,429,787.80
  6. Step 6: Final answer
    x = 121,380,929.70

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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.