Home / 122,497,009.20-183,745,513.80-77,147,377.20

Finding the Fourth Proportional to 122,497,009.20, 183,745,513.80 and 77,147,377.20

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Solution

The fourth proportional to 122,497,009.20, 183,745,513.80 and 77,147,377.20 is: 115,721,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,497,009.20 : 183,745,513.80 = 77,147,377.20 : x
  2. Step 2: Convert to fraction form
    122,497,009.20/183,745,513.80 = 77,147,377.20/x
  3. Step 3: Cross multiply
    122,497,009.20x = 183,745,513.80 × 77,147,377.20
  4. Step 4: Simplify right side
    122,497,009.20x = 14,175,484,461,936,406
  5. Step 5: Solve for x
    x = 14,175,484,461,936,406/122,497,009.20
  6. Step 6: Final answer
    x = 115,721,065.80

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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.