Home / 190,005.12-262,205.10-105,122.79

Finding the Fourth Proportional to 190,005.12, 262,205.10 and 105,122.79

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Solution

The fourth proportional to 190,005.12, 262,205.10 and 105,122.79 is: 145,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,005.12 : 262,205.10 = 105,122.79 : x
  2. Step 2: Convert to fraction form
    190,005.12/262,205.10 = 105,122.79/x
  3. Step 3: Cross multiply
    190,005.12x = 262,205.10 × 105,122.79
  4. Step 4: Simplify right side
    190,005.12x = 27,563,731,664.23
  5. Step 5: Solve for x
    x = 27,563,731,664.23/190,005.12
  6. Step 6: Final answer
    x = 145,068.36

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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.