Home / 128,122,297.75-192,490,041.48-82,154,228.64

Finding the Fourth Proportional to 128,122,297.75, 192,490,041.48 and 82,154,228.64

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Solution

The fourth proportional to 128,122,297.75, 192,490,041.48 and 82,154,228.64 is: 123,427,936.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,297.75 : 192,490,041.48 = 82,154,228.64 : x
  2. Step 2: Convert to fraction form
    128,122,297.75/192,490,041.48 = 82,154,228.64/x
  3. Step 3: Cross multiply
    128,122,297.75x = 192,490,041.48 × 82,154,228.64
  4. Step 4: Simplify right side
    128,122,297.75x = 15,813,870,878,671,004
  5. Step 5: Solve for x
    x = 15,813,870,878,671,004/128,122,297.75
  6. Step 6: Final answer
    x = 123,427,936.87

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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.