Home / 128,122,281.06-192,490,016.36-82,154,211.93

Finding the Fourth Proportional to 128,122,281.06, 192,490,016.36 and 82,154,211.93

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Solution

The fourth proportional to 128,122,281.06, 192,490,016.36 and 82,154,211.93 is: 123,427,911.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,281.06 : 192,490,016.36 = 82,154,211.93 : x
  2. Step 2: Convert to fraction form
    128,122,281.06/192,490,016.36 = 82,154,211.93/x
  3. Step 3: Cross multiply
    128,122,281.06x = 192,490,016.36 × 82,154,211.93
  4. Step 4: Simplify right side
    128,122,281.06x = 15,813,865,598,037,836
  5. Step 5: Solve for x
    x = 15,813,865,598,037,836/128,122,281.06
  6. Step 6: Final answer
    x = 123,427,911.74

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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.