Home / 149,933.45-206,915.87-86,280.77

Finding the Fourth Proportional to 149,933.45, 206,915.87 and 86,280.77

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Solution

The fourth proportional to 149,933.45, 206,915.87 and 86,280.77 is: 119,071.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,933.45 : 206,915.87 = 86,280.77 : x
  2. Step 2: Convert to fraction form
    149,933.45/206,915.87 = 86,280.77/x
  3. Step 3: Cross multiply
    149,933.45x = 206,915.87 × 86,280.77
  4. Step 4: Simplify right side
    149,933.45x = 17,852,860,588.82
  5. Step 5: Solve for x
    x = 17,852,860,588.82/149,933.45
  6. Step 6: Final answer
    x = 119,071.90

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1.5x scale

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.