Home / 212,128,639.58-292,763,006.87-128,494,316.25

Finding the Fourth Proportional to 212,128,639.58, 292,763,006.87 and 128,494,316.25

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Solution

The fourth proportional to 212,128,639.58, 292,763,006.87 and 128,494,316.25 is: 177,337,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,128,639.58 : 292,763,006.87 = 128,494,316.25 : x
  2. Step 2: Convert to fraction form
    212,128,639.58/292,763,006.87 = 128,494,316.25/x
  3. Step 3: Cross multiply
    212,128,639.58x = 292,763,006.87 × 128,494,316.25
  4. Step 4: Simplify right side
    212,128,639.58x = 37,618,382,391,054,704
  5. Step 5: Solve for x
    x = 37,618,382,391,054,704/212,128,639.58
  6. Step 6: Final answer
    x = 177,337,593.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.